blob: 41ea84e3f69c60fc9785254a254bd14ecfea1da7 [file] [log] [blame]
Michael Buesch753f4922007-09-19 14:20:30 -07001/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
Michael Buesch753f4922007-09-19 14:20:30 -07004 * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
5 * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
6 * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
Gary Zambrano8056bfa2006-04-10 12:05:40 -07007 * Copyright (C) 2006 Broadcom Corporation.
Michael Büscheb032b92011-07-04 20:50:05 +02008 * Copyright (C) 2007 Michael Buesch <m@bues.ch>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
10 * Distribute under GPL.
11 */
12
Joe Perches2fc96ff2010-02-17 15:01:50 +000013#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/types.h>
19#include <linux/netdevice.h>
20#include <linux/ethtool.h>
21#include <linux/mii.h>
22#include <linux/if_ether.h>
Stephen Hemminger72f48612007-06-04 13:25:39 -070023#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/etherdevice.h>
25#include <linux/pci.h>
26#include <linux/delay.h>
27#include <linux/init.h>
Alexey Dobriyana6b7a402011-06-06 10:43:46 +000028#include <linux/interrupt.h>
Andrew Morton89358f92005-10-28 16:38:02 -040029#include <linux/dma-mapping.h>
Michael Buesch753f4922007-09-19 14:20:30 -070030#include <linux/ssb/ssb.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090031#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33#include <asm/uaccess.h>
34#include <asm/io.h>
35#include <asm/irq.h>
36
Michael Buesch753f4922007-09-19 14:20:30 -070037
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include "b44.h"
39
40#define DRV_MODULE_NAME "b44"
Michael Buesch753f4922007-09-19 14:20:30 -070041#define DRV_MODULE_VERSION "2.0"
Joe Perches7329f0d2011-07-05 07:43:46 +000042#define DRV_DESCRIPTION "Broadcom 44xx/47xx 10/100 PCI ethernet driver"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#define B44_DEF_MSG_ENABLE \
45 (NETIF_MSG_DRV | \
46 NETIF_MSG_PROBE | \
47 NETIF_MSG_LINK | \
48 NETIF_MSG_TIMER | \
49 NETIF_MSG_IFDOWN | \
50 NETIF_MSG_IFUP | \
51 NETIF_MSG_RX_ERR | \
52 NETIF_MSG_TX_ERR)
53
54/* length of time before we decide the hardware is borked,
55 * and dev->tx_timeout() should be called to fix the problem
56 */
57#define B44_TX_TIMEOUT (5 * HZ)
58
59/* hardware minimum and maximum for a single frame's data payload */
60#define B44_MIN_MTU 60
61#define B44_MAX_MTU 1500
62
63#define B44_RX_RING_SIZE 512
64#define B44_DEF_RX_RING_PENDING 200
65#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
66 B44_RX_RING_SIZE)
67#define B44_TX_RING_SIZE 512
68#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
69#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
70 B44_TX_RING_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
72#define TX_RING_GAP(BP) \
73 (B44_TX_RING_SIZE - (BP)->tx_pending)
74#define TX_BUFFS_AVAIL(BP) \
75 (((BP)->tx_cons <= (BP)->tx_prod) ? \
76 (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
77 (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
78#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
79
Felix Fietkau4ca85792009-01-09 02:39:57 +000080#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
81#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83/* minimum number of free TX descriptors required to wake up TX process */
84#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
85
Gary Zambrano725ad802006-06-20 15:34:36 -070086/* b44 internal pattern match filter info */
87#define B44_PATTERN_BASE 0x400
88#define B44_PATTERN_SIZE 0x80
89#define B44_PMASK_BASE 0x600
90#define B44_PMASK_SIZE 0x10
91#define B44_MAX_PATTERNS 16
92#define B44_ETHIPV6UDP_HLEN 62
93#define B44_ETHIPV4UDP_HLEN 42
94
Michael Buesch753f4922007-09-19 14:20:30 -070095MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
Joe Perches7329f0d2011-07-05 07:43:46 +000096MODULE_DESCRIPTION(DRV_DESCRIPTION);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097MODULE_LICENSE("GPL");
98MODULE_VERSION(DRV_MODULE_VERSION);
99
100static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
101module_param(b44_debug, int, 0);
102MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
Michael Buesch753f4922007-09-19 14:20:30 -0700105#ifdef CONFIG_B44_PCI
Alexey Dobriyana3aa1882010-01-07 11:58:11 +0000106static DEFINE_PCI_DEVICE_TABLE(b44_pci_tbl) = {
Michael Buesch753f4922007-09-19 14:20:30 -0700107 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
108 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
109 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
110 { 0 } /* terminate list with empty entry */
111};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
113
Michael Buesch753f4922007-09-19 14:20:30 -0700114static struct pci_driver b44_pci_driver = {
115 .name = DRV_MODULE_NAME,
116 .id_table = b44_pci_tbl,
117};
118#endif /* CONFIG_B44_PCI */
119
120static const struct ssb_device_id b44_ssb_tbl[] = {
121 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
122 SSB_DEVTABLE_END
123};
124MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126static void b44_halt(struct b44 *);
127static void b44_init_rings(struct b44 *);
Michael Chan5fc7d612007-01-26 23:59:57 -0800128
129#define B44_FULL_RESET 1
130#define B44_FULL_RESET_SKIP_PHY 2
131#define B44_PARTIAL_RESET 3
Miguel Botónfedb0ee2008-01-01 01:17:54 +0100132#define B44_CHIP_RESET_FULL 4
133#define B44_CHIP_RESET_PARTIAL 5
Michael Chan5fc7d612007-01-26 23:59:57 -0800134
Gary Zambrano00e8b3a2006-06-20 15:34:26 -0700135static void b44_init_hw(struct b44 *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
John W. Linville9f38c632005-10-18 21:30:59 -0400137static int dma_desc_sync_size;
Michael Buesch753f4922007-09-19 14:20:30 -0700138static int instance;
John W. Linville9f38c632005-10-18 21:30:59 -0400139
Francois Romieu33539302005-11-07 01:51:34 +0100140static const char b44_gstrings[][ETH_GSTRING_LEN] = {
141#define _B44(x...) # x,
142B44_STAT_REG_DECLARE
143#undef _B44
144};
145
Michael Buesch753f4922007-09-19 14:20:30 -0700146static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
147 dma_addr_t dma_base,
148 unsigned long offset,
149 enum dma_data_direction dir)
John W. Linville9f38c632005-10-18 21:30:59 -0400150{
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700151 dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
152 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400153}
154
Michael Buesch753f4922007-09-19 14:20:30 -0700155static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
156 dma_addr_t dma_base,
157 unsigned long offset,
158 enum dma_data_direction dir)
John W. Linville9f38c632005-10-18 21:30:59 -0400159{
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700160 dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
161 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400162}
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
165{
Michael Buesch753f4922007-09-19 14:20:30 -0700166 return ssb_read32(bp->sdev, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167}
168
Jeff Garzik10badc22006-04-12 18:04:32 -0400169static inline void bw32(const struct b44 *bp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 unsigned long reg, unsigned long val)
171{
Michael Buesch753f4922007-09-19 14:20:30 -0700172 ssb_write32(bp->sdev, reg, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173}
174
175static int b44_wait_bit(struct b44 *bp, unsigned long reg,
176 u32 bit, unsigned long timeout, const int clear)
177{
178 unsigned long i;
179
180 for (i = 0; i < timeout; i++) {
181 u32 val = br32(bp, reg);
182
183 if (clear && !(val & bit))
184 break;
185 if (!clear && (val & bit))
186 break;
187 udelay(10);
188 }
189 if (i == timeout) {
Jochen Friedrichf6ca0572010-02-12 10:11:54 +0000190 if (net_ratelimit())
Joe Perches2fc96ff2010-02-17 15:01:50 +0000191 netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n",
192 bit, reg, clear ? "clear" : "set");
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 return -ENODEV;
195 }
196 return 0;
197}
198
Michael Buesch753f4922007-09-19 14:20:30 -0700199static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200{
201 u32 val;
202
Michael Buesch753f4922007-09-19 14:20:30 -0700203 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
204 (index << CAM_CTRL_INDEX_SHIFT)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Michael Buesch753f4922007-09-19 14:20:30 -0700206 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
Michael Buesch753f4922007-09-19 14:20:30 -0700208 val = br32(bp, B44_CAM_DATA_LO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Michael Buesch753f4922007-09-19 14:20:30 -0700210 data[2] = (val >> 24) & 0xFF;
211 data[3] = (val >> 16) & 0xFF;
212 data[4] = (val >> 8) & 0xFF;
213 data[5] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
Michael Buesch753f4922007-09-19 14:20:30 -0700215 val = br32(bp, B44_CAM_DATA_HI);
216
217 data[0] = (val >> 8) & 0xFF;
218 data[1] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219}
220
Michael Buesch753f4922007-09-19 14:20:30 -0700221static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222{
223 u32 val;
224
225 val = ((u32) data[2]) << 24;
226 val |= ((u32) data[3]) << 16;
227 val |= ((u32) data[4]) << 8;
228 val |= ((u32) data[5]) << 0;
229 bw32(bp, B44_CAM_DATA_LO, val);
Jeff Garzik10badc22006-04-12 18:04:32 -0400230 val = (CAM_DATA_HI_VALID |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 (((u32) data[0]) << 8) |
232 (((u32) data[1]) << 0));
233 bw32(bp, B44_CAM_DATA_HI, val);
234 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
235 (index << CAM_CTRL_INDEX_SHIFT)));
Jeff Garzik10badc22006-04-12 18:04:32 -0400236 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237}
238
239static inline void __b44_disable_ints(struct b44 *bp)
240{
241 bw32(bp, B44_IMASK, 0);
242}
243
244static void b44_disable_ints(struct b44 *bp)
245{
246 __b44_disable_ints(bp);
247
248 /* Flush posted writes. */
249 br32(bp, B44_IMASK);
250}
251
252static void b44_enable_ints(struct b44 *bp)
253{
254 bw32(bp, B44_IMASK, bp->imask);
255}
256
Michael Buesch753f4922007-09-19 14:20:30 -0700257static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258{
259 int err;
260
261 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
262 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
263 (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
Michael Buesch753f4922007-09-19 14:20:30 -0700264 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 (reg << MDIO_DATA_RA_SHIFT) |
266 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
267 err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
268 *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
269
270 return err;
271}
272
Michael Buesch753f4922007-09-19 14:20:30 -0700273static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274{
275 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
276 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
277 (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
Michael Buesch753f4922007-09-19 14:20:30 -0700278 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 (reg << MDIO_DATA_RA_SHIFT) |
280 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
281 (val & MDIO_DATA_DATA)));
282 return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
283}
284
Michael Buesch753f4922007-09-19 14:20:30 -0700285static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
286{
287 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
288 return 0;
289
290 return __b44_readphy(bp, bp->phy_addr, reg, val);
291}
292
293static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
294{
295 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
296 return 0;
297
298 return __b44_writephy(bp, bp->phy_addr, reg, val);
299}
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301/* miilib interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302static int b44_mii_read(struct net_device *dev, int phy_id, int location)
303{
304 u32 val;
305 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -0700306 int rc = __b44_readphy(bp, phy_id, location, &val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 if (rc)
308 return 0xffffffff;
309 return val;
310}
311
312static void b44_mii_write(struct net_device *dev, int phy_id, int location,
313 int val)
314{
315 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -0700316 __b44_writephy(bp, phy_id, location, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317}
318
319static int b44_phy_reset(struct b44 *bp)
320{
321 u32 val;
322 int err;
323
Michael Buesch753f4922007-09-19 14:20:30 -0700324 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
325 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
327 if (err)
328 return err;
329 udelay(100);
330 err = b44_readphy(bp, MII_BMCR, &val);
331 if (!err) {
332 if (val & BMCR_RESET) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000333 netdev_err(bp->dev, "PHY Reset would not complete\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 err = -ENODEV;
335 }
336 }
337
Hauke Mehrtens8850dce2010-02-20 10:55:25 +0000338 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
341static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
342{
343 u32 val;
344
345 bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
346 bp->flags |= pause_flags;
347
348 val = br32(bp, B44_RXCONFIG);
349 if (pause_flags & B44_FLAG_RX_PAUSE)
350 val |= RXCONFIG_FLOW;
351 else
352 val &= ~RXCONFIG_FLOW;
353 bw32(bp, B44_RXCONFIG, val);
354
355 val = br32(bp, B44_MAC_FLOW);
356 if (pause_flags & B44_FLAG_TX_PAUSE)
357 val |= (MAC_FLOW_PAUSE_ENAB |
358 (0xc0 & MAC_FLOW_RX_HI_WATER));
359 else
360 val &= ~MAC_FLOW_PAUSE_ENAB;
361 bw32(bp, B44_MAC_FLOW, val);
362}
363
364static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
365{
Jeff Garzik10badc22006-04-12 18:04:32 -0400366 u32 pause_enab = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700368 /* The driver supports only rx pause by default because
Jeff Garzik10badc22006-04-12 18:04:32 -0400369 the b44 mac tx pause mechanism generates excessive
370 pause frames.
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700371 Use ethtool to turn on b44 tx pause if necessary.
372 */
373 if ((local & ADVERTISE_PAUSE_CAP) &&
Jeff Garzik10badc22006-04-12 18:04:32 -0400374 (local & ADVERTISE_PAUSE_ASYM)){
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700375 if ((remote & LPA_PAUSE_ASYM) &&
376 !(remote & LPA_PAUSE_CAP))
377 pause_enab |= B44_FLAG_RX_PAUSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 }
379
380 __b44_set_flow_ctrl(bp, pause_enab);
381}
382
Hauke Mehrtens6c08af02010-11-27 06:47:43 +0000383#ifdef CONFIG_BCM47XX
384#include <asm/mach-bcm47xx/nvram.h>
Michael Buesch753f4922007-09-19 14:20:30 -0700385static void b44_wap54g10_workaround(struct b44 *bp)
386{
Hauke Mehrtens6c08af02010-11-27 06:47:43 +0000387 char buf[20];
Michael Buesch753f4922007-09-19 14:20:30 -0700388 u32 val;
389 int err;
390
391 /*
392 * workaround for bad hardware design in Linksys WAP54G v1.0
393 * see https://dev.openwrt.org/ticket/146
394 * check and reset bit "isolate"
395 */
Hauke Mehrtens6c08af02010-11-27 06:47:43 +0000396 if (nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
Michael Buesch753f4922007-09-19 14:20:30 -0700397 return;
Hauke Mehrtens6c08af02010-11-27 06:47:43 +0000398 if (simple_strtoul(buf, NULL, 0) == 2) {
Michael Buesch753f4922007-09-19 14:20:30 -0700399 err = __b44_readphy(bp, 0, MII_BMCR, &val);
400 if (err)
401 goto error;
402 if (!(val & BMCR_ISOLATE))
403 return;
404 val &= ~BMCR_ISOLATE;
405 err = __b44_writephy(bp, 0, MII_BMCR, val);
406 if (err)
407 goto error;
408 }
409 return;
410error:
Joe Perches2fc96ff2010-02-17 15:01:50 +0000411 pr_warning("PHY: cannot reset MII transceiver isolate bit\n");
Michael Buesch753f4922007-09-19 14:20:30 -0700412}
413#else
414static inline void b44_wap54g10_workaround(struct b44 *bp)
415{
416}
417#endif
418
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419static int b44_setup_phy(struct b44 *bp)
420{
421 u32 val;
422 int err;
423
Michael Buesch753f4922007-09-19 14:20:30 -0700424 b44_wap54g10_workaround(bp);
425
426 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
427 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
429 goto out;
430 if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
431 val & MII_ALEDCTRL_ALLMSK)) != 0)
432 goto out;
433 if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
434 goto out;
435 if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
436 val | MII_TLEDCTRL_ENABLE)) != 0)
437 goto out;
438
439 if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
440 u32 adv = ADVERTISE_CSMA;
441
442 if (bp->flags & B44_FLAG_ADV_10HALF)
443 adv |= ADVERTISE_10HALF;
444 if (bp->flags & B44_FLAG_ADV_10FULL)
445 adv |= ADVERTISE_10FULL;
446 if (bp->flags & B44_FLAG_ADV_100HALF)
447 adv |= ADVERTISE_100HALF;
448 if (bp->flags & B44_FLAG_ADV_100FULL)
449 adv |= ADVERTISE_100FULL;
450
451 if (bp->flags & B44_FLAG_PAUSE_AUTO)
452 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
453
454 if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
455 goto out;
456 if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
457 BMCR_ANRESTART))) != 0)
458 goto out;
459 } else {
460 u32 bmcr;
461
462 if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
463 goto out;
464 bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
465 if (bp->flags & B44_FLAG_100_BASE_T)
466 bmcr |= BMCR_SPEED100;
467 if (bp->flags & B44_FLAG_FULL_DUPLEX)
468 bmcr |= BMCR_FULLDPLX;
469 if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
470 goto out;
471
472 /* Since we will not be negotiating there is no safe way
473 * to determine if the link partner supports flow control
474 * or not. So just disable it completely in this case.
475 */
476 b44_set_flow_ctrl(bp, 0, 0);
477 }
478
479out:
480 return err;
481}
482
483static void b44_stats_update(struct b44 *bp)
484{
485 unsigned long reg;
486 u32 *val;
487
488 val = &bp->hw_stats.tx_good_octets;
489 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
490 *val++ += br32(bp, reg);
491 }
Francois Romieu33539302005-11-07 01:51:34 +0100492
493 /* Pad */
494 reg += 8*4UL;
495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
497 *val++ += br32(bp, reg);
498 }
499}
500
501static void b44_link_report(struct b44 *bp)
502{
503 if (!netif_carrier_ok(bp->dev)) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000504 netdev_info(bp->dev, "Link is down\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 } else {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000506 netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n",
507 (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
508 (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
Joe Perches2fc96ff2010-02-17 15:01:50 +0000510 netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n",
511 (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
512 (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 }
514}
515
516static void b44_check_phy(struct b44 *bp)
517{
518 u32 bmsr, aux;
519
Michael Buesch753f4922007-09-19 14:20:30 -0700520 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
521 bp->flags |= B44_FLAG_100_BASE_T;
522 bp->flags |= B44_FLAG_FULL_DUPLEX;
523 if (!netif_carrier_ok(bp->dev)) {
524 u32 val = br32(bp, B44_TX_CTRL);
525 val |= TX_CTRL_DUPLEX;
526 bw32(bp, B44_TX_CTRL, val);
527 netif_carrier_on(bp->dev);
528 b44_link_report(bp);
529 }
530 return;
531 }
532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
534 !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
535 (bmsr != 0xffff)) {
536 if (aux & MII_AUXCTRL_SPEED)
537 bp->flags |= B44_FLAG_100_BASE_T;
538 else
539 bp->flags &= ~B44_FLAG_100_BASE_T;
540 if (aux & MII_AUXCTRL_DUPLEX)
541 bp->flags |= B44_FLAG_FULL_DUPLEX;
542 else
543 bp->flags &= ~B44_FLAG_FULL_DUPLEX;
544
545 if (!netif_carrier_ok(bp->dev) &&
546 (bmsr & BMSR_LSTATUS)) {
547 u32 val = br32(bp, B44_TX_CTRL);
548 u32 local_adv, remote_adv;
549
550 if (bp->flags & B44_FLAG_FULL_DUPLEX)
551 val |= TX_CTRL_DUPLEX;
552 else
553 val &= ~TX_CTRL_DUPLEX;
554 bw32(bp, B44_TX_CTRL, val);
555
556 if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
557 !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
558 !b44_readphy(bp, MII_LPA, &remote_adv))
559 b44_set_flow_ctrl(bp, local_adv, remote_adv);
560
561 /* Link now up */
562 netif_carrier_on(bp->dev);
563 b44_link_report(bp);
564 } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
565 /* Link now down */
566 netif_carrier_off(bp->dev);
567 b44_link_report(bp);
568 }
569
570 if (bmsr & BMSR_RFAULT)
Joe Perches2fc96ff2010-02-17 15:01:50 +0000571 netdev_warn(bp->dev, "Remote fault detected in PHY\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 if (bmsr & BMSR_JCD)
Joe Perches2fc96ff2010-02-17 15:01:50 +0000573 netdev_warn(bp->dev, "Jabber detected in PHY\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 }
575}
576
577static void b44_timer(unsigned long __opaque)
578{
579 struct b44 *bp = (struct b44 *) __opaque;
580
581 spin_lock_irq(&bp->lock);
582
583 b44_check_phy(bp);
584
585 b44_stats_update(bp);
586
587 spin_unlock_irq(&bp->lock);
588
Stephen Hemmingera72a8172007-06-04 13:25:37 -0700589 mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590}
591
592static void b44_tx(struct b44 *bp)
593{
594 u32 cur, cons;
595
596 cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
597 cur /= sizeof(struct dma_desc);
598
599 /* XXX needs updating when NETIF_F_SG is supported */
600 for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
601 struct ring_info *rp = &bp->tx_buffers[cons];
602 struct sk_buff *skb = rp->skb;
603
Eric Sesterhenn5d9428d2006-04-02 13:52:48 +0200604 BUG_ON(skb == NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700606 dma_unmap_single(bp->sdev->dma_dev,
607 rp->mapping,
608 skb->len,
609 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 rp->skb = NULL;
Eric Dumazet4924f442011-07-04 17:57:10 -0700611 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 }
613
614 bp->tx_cons = cons;
615 if (netif_queue_stopped(bp->dev) &&
616 TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
617 netif_wake_queue(bp->dev);
618
619 bw32(bp, B44_GPTIMER, 0);
620}
621
622/* Works like this. This chip writes a 'struct rx_header" 30 bytes
623 * before the DMA address you give it. So we allocate 30 more bytes
624 * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
625 * point the chip at 30 bytes past where the rx_header will go.
626 */
627static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
628{
629 struct dma_desc *dp;
630 struct ring_info *src_map, *map;
631 struct rx_header *rh;
632 struct sk_buff *skb;
633 dma_addr_t mapping;
634 int dest_idx;
635 u32 ctrl;
636
637 src_map = NULL;
638 if (src_idx >= 0)
639 src_map = &bp->rx_buffers[src_idx];
640 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
641 map = &bp->rx_buffers[dest_idx];
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700642 skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 if (skb == NULL)
644 return -ENOMEM;
645
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700646 mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
647 RX_PKT_BUF_SZ,
648 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
650 /* Hardware bug work-around, the chip is unable to do PCI DMA
651 to/from anything above 1GB :-( */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700652 if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
Yang Hongyang28b76792009-04-06 19:01:17 -0700653 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 /* Sigh... */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700655 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
656 dma_unmap_single(bp->sdev->dma_dev, mapping,
Michael Bueschf2257632008-06-20 11:50:29 +0200657 RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 dev_kfree_skb_any(skb);
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700659 skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 if (skb == NULL)
661 return -ENOMEM;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700662 mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
663 RX_PKT_BUF_SZ,
664 DMA_FROM_DEVICE);
665 if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
666 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
667 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
668 dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 dev_kfree_skb_any(skb);
670 return -ENOMEM;
671 }
Eric Dumazeta58c8912009-01-15 15:29:35 -0800672 bp->force_copybreak = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 }
674
Stephen Hemminger72f48612007-06-04 13:25:39 -0700675 rh = (struct rx_header *) skb->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 rh->len = 0;
678 rh->flags = 0;
679
680 map->skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700681 map->mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682
683 if (src_map != NULL)
684 src_map->skb = NULL;
685
Felix Fietkau4ca85792009-01-09 02:39:57 +0000686 ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 if (dest_idx == (B44_RX_RING_SIZE - 1))
688 ctrl |= DESC_CTRL_EOT;
689
690 dp = &bp->rx_ring[dest_idx];
691 dp->ctrl = cpu_to_le32(ctrl);
Felix Fietkau4ca85792009-01-09 02:39:57 +0000692 dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693
John W. Linville9f38c632005-10-18 21:30:59 -0400694 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700695 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000696 dest_idx * sizeof(*dp),
Michael Buesch753f4922007-09-19 14:20:30 -0700697 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400698
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 return RX_PKT_BUF_SZ;
700}
701
702static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
703{
704 struct dma_desc *src_desc, *dest_desc;
705 struct ring_info *src_map, *dest_map;
706 struct rx_header *rh;
707 int dest_idx;
Al Viroa7bed272007-01-29 15:36:54 -0500708 __le32 ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709
710 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
711 dest_desc = &bp->rx_ring[dest_idx];
712 dest_map = &bp->rx_buffers[dest_idx];
713 src_desc = &bp->rx_ring[src_idx];
714 src_map = &bp->rx_buffers[src_idx];
715
716 dest_map->skb = src_map->skb;
717 rh = (struct rx_header *) src_map->skb->data;
718 rh->len = 0;
719 rh->flags = 0;
Michael Buesch753f4922007-09-19 14:20:30 -0700720 dest_map->mapping = src_map->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721
John W. Linville9f38c632005-10-18 21:30:59 -0400722 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700723 b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000724 src_idx * sizeof(*src_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700725 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 ctrl = src_desc->ctrl;
728 if (dest_idx == (B44_RX_RING_SIZE - 1))
729 ctrl |= cpu_to_le32(DESC_CTRL_EOT);
730 else
731 ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
732
733 dest_desc->ctrl = ctrl;
734 dest_desc->addr = src_desc->addr;
John W. Linville9f38c632005-10-18 21:30:59 -0400735
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 src_map->skb = NULL;
737
John W. Linville9f38c632005-10-18 21:30:59 -0400738 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700739 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000740 dest_idx * sizeof(*dest_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700741 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400742
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700743 dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
744 RX_PKT_BUF_SZ,
745 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746}
747
748static int b44_rx(struct b44 *bp, int budget)
749{
750 int received;
751 u32 cons, prod;
752
753 received = 0;
754 prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
755 prod /= sizeof(struct dma_desc);
756 cons = bp->rx_cons;
757
758 while (cons != prod && budget > 0) {
759 struct ring_info *rp = &bp->rx_buffers[cons];
760 struct sk_buff *skb = rp->skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700761 dma_addr_t map = rp->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 struct rx_header *rh;
763 u16 len;
764
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700765 dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
766 RX_PKT_BUF_SZ,
767 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 rh = (struct rx_header *) skb->data;
Al Viroa7bed272007-01-29 15:36:54 -0500769 len = le16_to_cpu(rh->len);
Stephen Hemminger72f48612007-06-04 13:25:39 -0700770 if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
772 drop_it:
773 b44_recycle_rx(bp, cons, bp->rx_prod);
774 drop_it_no_recycle:
Eric Dumazet553e2332009-05-27 10:34:50 +0000775 bp->dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 goto next_pkt;
777 }
778
779 if (len == 0) {
780 int i = 0;
781
782 do {
783 udelay(2);
784 barrier();
Al Viroa7bed272007-01-29 15:36:54 -0500785 len = le16_to_cpu(rh->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 } while (len == 0 && i++ < 5);
787 if (len == 0)
788 goto drop_it;
789 }
790
791 /* Omit CRC. */
792 len -= 4;
793
Eric Dumazeta58c8912009-01-15 15:29:35 -0800794 if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 int skb_size;
796 skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
797 if (skb_size < 0)
798 goto drop_it;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700799 dma_unmap_single(bp->sdev->dma_dev, map,
800 skb_size, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 /* Leave out rx_header */
Felix Fietkau4ca85792009-01-09 02:39:57 +0000802 skb_put(skb, len + RX_PKT_OFFSET);
803 skb_pull(skb, RX_PKT_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 } else {
805 struct sk_buff *copy_skb;
806
807 b44_recycle_rx(bp, cons, bp->rx_prod);
Hauke Mehrtens53639202010-02-20 10:55:26 +0000808 copy_skb = netdev_alloc_skb(bp->dev, len + 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 if (copy_skb == NULL)
810 goto drop_it_no_recycle;
811
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 skb_reserve(copy_skb, 2);
813 skb_put(copy_skb, len);
814 /* DMA sync done above, copy just the actual packet */
Stephen Hemminger72f48612007-06-04 13:25:39 -0700815 skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300816 copy_skb->data, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 skb = copy_skb;
818 }
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700819 skb_checksum_none_assert(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 skb->protocol = eth_type_trans(skb, bp->dev);
821 netif_receive_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 received++;
823 budget--;
824 next_pkt:
825 bp->rx_prod = (bp->rx_prod + 1) &
826 (B44_RX_RING_SIZE - 1);
827 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
828 }
829
830 bp->rx_cons = cons;
831 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
832
833 return received;
834}
835
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700836static int b44_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700838 struct b44 *bp = container_of(napi, struct b44, napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700839 int work_done;
Dongdong Denge99b1f02009-09-16 16:10:47 +0000840 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841
Dongdong Denge99b1f02009-09-16 16:10:47 +0000842 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843
844 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
845 /* spin_lock(&bp->tx_lock); */
846 b44_tx(bp);
847 /* spin_unlock(&bp->tx_lock); */
848 }
Mark Lord32737e92010-09-04 14:17:59 +0000849 if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */
850 bp->istat &= ~ISTAT_RFO;
851 b44_disable_ints(bp);
852 ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */
853 b44_init_rings(bp);
854 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
855 netif_wake_queue(bp->dev);
856 }
857
Dongdong Denge99b1f02009-09-16 16:10:47 +0000858 spin_unlock_irqrestore(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700860 work_done = 0;
861 if (bp->istat & ISTAT_RX)
862 work_done += b44_rx(bp, budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
864 if (bp->istat & ISTAT_ERRORS) {
Francois Romieud15e9c42006-12-17 23:03:15 +0100865 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 b44_halt(bp);
867 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800868 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 netif_wake_queue(bp->dev);
Francois Romieud15e9c42006-12-17 23:03:15 +0100870 spin_unlock_irqrestore(&bp->lock, flags);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700871 work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872 }
873
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700874 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -0800875 napi_complete(napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 b44_enable_ints(bp);
877 }
878
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700879 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880}
881
David Howells7d12e782006-10-05 14:55:46 +0100882static irqreturn_t b44_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883{
884 struct net_device *dev = dev_id;
885 struct b44 *bp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 u32 istat, imask;
887 int handled = 0;
888
Francois Romieu65b984f2005-11-07 01:52:06 +0100889 spin_lock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890
891 istat = br32(bp, B44_ISTAT);
892 imask = br32(bp, B44_IMASK);
893
Johannes Berge78181f2006-11-06 23:17:20 +0100894 /* The interrupt mask register controls which interrupt bits
895 * will actually raise an interrupt to the CPU when set by hw/firmware,
896 * but doesn't mask off the bits.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 */
898 istat &= imask;
899 if (istat) {
900 handled = 1;
Francois Romieuba5eec92005-11-08 23:37:12 +0100901
902 if (unlikely(!netif_running(dev))) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000903 netdev_info(dev, "late interrupt\n");
Francois Romieuba5eec92005-11-08 23:37:12 +0100904 goto irq_ack;
905 }
906
Ben Hutchings288379f2009-01-19 16:43:59 -0800907 if (napi_schedule_prep(&bp->napi)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908 /* NOTE: These writes are posted by the readback of
909 * the ISTAT register below.
910 */
911 bp->istat = istat;
912 __b44_disable_ints(bp);
Ben Hutchings288379f2009-01-19 16:43:59 -0800913 __napi_schedule(&bp->napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
915
Francois Romieuba5eec92005-11-08 23:37:12 +0100916irq_ack:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 bw32(bp, B44_ISTAT, istat);
918 br32(bp, B44_ISTAT);
919 }
Francois Romieu65b984f2005-11-07 01:52:06 +0100920 spin_unlock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 return IRQ_RETVAL(handled);
922}
923
924static void b44_tx_timeout(struct net_device *dev)
925{
926 struct b44 *bp = netdev_priv(dev);
927
Joe Perches2fc96ff2010-02-17 15:01:50 +0000928 netdev_err(dev, "transmit timed out, resetting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
930 spin_lock_irq(&bp->lock);
931
932 b44_halt(bp);
933 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800934 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
936 spin_unlock_irq(&bp->lock);
937
938 b44_enable_ints(bp);
939
940 netif_wake_queue(dev);
941}
942
Stephen Hemminger613573252009-08-31 19:50:58 +0000943static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944{
945 struct b44 *bp = netdev_priv(dev);
Francois Romieuc7193692005-11-07 01:50:03 +0100946 int rc = NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947 dma_addr_t mapping;
948 u32 len, entry, ctrl;
Dongdong Deng22580f82009-08-13 19:12:31 +0000949 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950
951 len = skb->len;
Dongdong Deng22580f82009-08-13 19:12:31 +0000952 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953
954 /* This is a hard error, log it. */
955 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
956 netif_stop_queue(dev);
Joe Perches2fc96ff2010-02-17 15:01:50 +0000957 netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
Francois Romieuc7193692005-11-07 01:50:03 +0100958 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959 }
960
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700961 mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
962 if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700963 struct sk_buff *bounce_skb;
964
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700966 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
967 dma_unmap_single(bp->sdev->dma_dev, mapping, len,
Michael Bueschf2257632008-06-20 11:50:29 +0200968 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969
David S. Miller9034f772009-02-10 01:56:45 -0800970 bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 if (!bounce_skb)
Francois Romieuc7193692005-11-07 01:50:03 +0100972 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700974 mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
975 len, DMA_TO_DEVICE);
976 if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
977 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
978 dma_unmap_single(bp->sdev->dma_dev, mapping,
Michael Bueschf2257632008-06-20 11:50:29 +0200979 len, DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 dev_kfree_skb_any(bounce_skb);
Francois Romieuc7193692005-11-07 01:50:03 +0100981 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 }
983
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700984 skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985 dev_kfree_skb_any(skb);
986 skb = bounce_skb;
987 }
988
989 entry = bp->tx_prod;
990 bp->tx_buffers[entry].skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700991 bp->tx_buffers[entry].mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992
993 ctrl = (len & DESC_CTRL_LEN);
994 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
995 if (entry == (B44_TX_RING_SIZE - 1))
996 ctrl |= DESC_CTRL_EOT;
997
998 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
999 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
1000
John W. Linville9f38c632005-10-18 21:30:59 -04001001 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001002 b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
1003 entry * sizeof(bp->tx_ring[0]),
1004 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001005
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 entry = NEXT_TX(entry);
1007
1008 bp->tx_prod = entry;
1009
1010 wmb();
1011
1012 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1013 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
1014 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1015 if (bp->flags & B44_FLAG_REORDER_BUG)
1016 br32(bp, B44_DMATX_PTR);
1017
1018 if (TX_BUFFS_AVAIL(bp) < 1)
1019 netif_stop_queue(dev);
1020
Francois Romieuc7193692005-11-07 01:50:03 +01001021out_unlock:
Dongdong Deng22580f82009-08-13 19:12:31 +00001022 spin_unlock_irqrestore(&bp->lock, flags);
Francois Romieuc7193692005-11-07 01:50:03 +01001023
1024 return rc;
1025
1026err_out:
1027 rc = NETDEV_TX_BUSY;
1028 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029}
1030
1031static int b44_change_mtu(struct net_device *dev, int new_mtu)
1032{
1033 struct b44 *bp = netdev_priv(dev);
1034
1035 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
1036 return -EINVAL;
1037
1038 if (!netif_running(dev)) {
1039 /* We'll just catch it later when the
1040 * device is up'd.
1041 */
1042 dev->mtu = new_mtu;
1043 return 0;
1044 }
1045
1046 spin_lock_irq(&bp->lock);
1047 b44_halt(bp);
1048 dev->mtu = new_mtu;
1049 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001050 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 spin_unlock_irq(&bp->lock);
1052
1053 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001054
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 return 0;
1056}
1057
1058/* Free up pending packets in all rx/tx rings.
1059 *
1060 * The chip has been shut down and the driver detached from
1061 * the networking, so no interrupts or new tx packets will
1062 * end up in the driver. bp->lock is not held and we are not
1063 * in an interrupt context and thus may sleep.
1064 */
1065static void b44_free_rings(struct b44 *bp)
1066{
1067 struct ring_info *rp;
1068 int i;
1069
1070 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1071 rp = &bp->rx_buffers[i];
1072
1073 if (rp->skb == NULL)
1074 continue;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001075 dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
1076 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 dev_kfree_skb_any(rp->skb);
1078 rp->skb = NULL;
1079 }
1080
1081 /* XXX needs changes once NETIF_F_SG is set... */
1082 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1083 rp = &bp->tx_buffers[i];
1084
1085 if (rp->skb == NULL)
1086 continue;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001087 dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
1088 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 dev_kfree_skb_any(rp->skb);
1090 rp->skb = NULL;
1091 }
1092}
1093
1094/* Initialize tx/rx rings for packet processing.
1095 *
1096 * The chip has been shut down and the driver detached from
1097 * the networking, so no interrupts or new tx packets will
Francois Romieu874a6212005-11-07 01:50:46 +01001098 * end up in the driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 */
1100static void b44_init_rings(struct b44 *bp)
1101{
1102 int i;
1103
1104 b44_free_rings(bp);
1105
1106 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1107 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1108
John W. Linville9f38c632005-10-18 21:30:59 -04001109 if (bp->flags & B44_FLAG_RX_RING_HACK)
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001110 dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
1111 DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001112
1113 if (bp->flags & B44_FLAG_TX_RING_HACK)
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001114 dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
1115 DMA_TABLE_BYTES, DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001116
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117 for (i = 0; i < bp->rx_pending; i++) {
1118 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1119 break;
1120 }
1121}
1122
1123/*
1124 * Must not be invoked with interrupt sources disabled and
1125 * the hardware shutdown down.
1126 */
1127static void b44_free_consistent(struct b44 *bp)
1128{
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001129 kfree(bp->rx_buffers);
1130 bp->rx_buffers = NULL;
1131 kfree(bp->tx_buffers);
1132 bp->tx_buffers = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 if (bp->rx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001134 if (bp->flags & B44_FLAG_RX_RING_HACK) {
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001135 dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
1136 DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001137 kfree(bp->rx_ring);
1138 } else
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001139 dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
1140 bp->rx_ring, bp->rx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 bp->rx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001142 bp->flags &= ~B44_FLAG_RX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 }
1144 if (bp->tx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001145 if (bp->flags & B44_FLAG_TX_RING_HACK) {
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001146 dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
1147 DMA_TABLE_BYTES, DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001148 kfree(bp->tx_ring);
1149 } else
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001150 dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
1151 bp->tx_ring, bp->tx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 bp->tx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001153 bp->flags &= ~B44_FLAG_TX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 }
1155}
1156
1157/*
1158 * Must not be invoked with interrupt sources disabled and
1159 * the hardware shutdown down. Can sleep.
1160 */
Michael Buesch753f4922007-09-19 14:20:30 -07001161static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162{
1163 int size;
1164
1165 size = B44_RX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001166 bp->rx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167 if (!bp->rx_buffers)
1168 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
1170 size = B44_TX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001171 bp->tx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172 if (!bp->tx_buffers)
1173 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174
1175 size = DMA_TABLE_BYTES;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001176 bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
1177 &bp->rx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001178 if (!bp->rx_ring) {
1179 /* Allocation may have failed due to pci_alloc_consistent
1180 insisting on use of GFP_DMA, which is more restrictive
1181 than necessary... */
1182 struct dma_desc *rx_ring;
1183 dma_addr_t rx_ring_dma;
1184
Michael Buesch753f4922007-09-19 14:20:30 -07001185 rx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001186 if (!rx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001187 goto out_err;
1188
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001189 rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
1190 DMA_TABLE_BYTES,
1191 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001192
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001193 if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001194 rx_ring_dma + size > DMA_BIT_MASK(30)) {
John W. Linville9f38c632005-10-18 21:30:59 -04001195 kfree(rx_ring);
1196 goto out_err;
1197 }
1198
1199 bp->rx_ring = rx_ring;
1200 bp->rx_ring_dma = rx_ring_dma;
1201 bp->flags |= B44_FLAG_RX_RING_HACK;
1202 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001204 bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
1205 &bp->tx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001206 if (!bp->tx_ring) {
Michael Bueschf2257632008-06-20 11:50:29 +02001207 /* Allocation may have failed due to ssb_dma_alloc_consistent
John W. Linville9f38c632005-10-18 21:30:59 -04001208 insisting on use of GFP_DMA, which is more restrictive
1209 than necessary... */
1210 struct dma_desc *tx_ring;
1211 dma_addr_t tx_ring_dma;
1212
Michael Buesch753f4922007-09-19 14:20:30 -07001213 tx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001214 if (!tx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001215 goto out_err;
1216
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001217 tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
1218 DMA_TABLE_BYTES,
1219 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001220
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001221 if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001222 tx_ring_dma + size > DMA_BIT_MASK(30)) {
John W. Linville9f38c632005-10-18 21:30:59 -04001223 kfree(tx_ring);
1224 goto out_err;
1225 }
1226
1227 bp->tx_ring = tx_ring;
1228 bp->tx_ring_dma = tx_ring_dma;
1229 bp->flags |= B44_FLAG_TX_RING_HACK;
1230 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231
1232 return 0;
1233
1234out_err:
1235 b44_free_consistent(bp);
1236 return -ENOMEM;
1237}
1238
1239/* bp->lock is held. */
1240static void b44_clear_stats(struct b44 *bp)
1241{
1242 unsigned long reg;
1243
1244 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1245 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
1246 br32(bp, reg);
1247 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
1248 br32(bp, reg);
1249}
1250
1251/* bp->lock is held. */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001252static void b44_chip_reset(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253{
Michael Buesch753f4922007-09-19 14:20:30 -07001254 struct ssb_device *sdev = bp->sdev;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001255 bool was_enabled;
Michael Buesch753f4922007-09-19 14:20:30 -07001256
Michael Bueschf8af11a2009-02-26 22:33:00 -08001257 was_enabled = ssb_device_is_enabled(bp->sdev);
1258
1259 ssb_device_enable(bp->sdev, 0);
1260 ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
1261
1262 if (was_enabled) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 bw32(bp, B44_RCV_LAZY, 0);
1264 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
Gary Zambrano40ee8c72007-02-16 13:27:27 -08001265 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 bw32(bp, B44_DMATX_CTRL, 0);
1267 bp->tx_prod = bp->tx_cons = 0;
1268 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1269 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1270 100, 0);
1271 }
1272 bw32(bp, B44_DMARX_CTRL, 0);
1273 bp->rx_prod = bp->rx_cons = 0;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001274 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 b44_clear_stats(bp);
1277
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001278 /*
1279 * Don't enable PHY if we are doing a partial reset
1280 * we are probably going to power down
1281 */
1282 if (reset_kind == B44_CHIP_RESET_PARTIAL)
1283 return;
1284
Michael Buesch753f4922007-09-19 14:20:30 -07001285 switch (sdev->bus->bustype) {
1286 case SSB_BUSTYPE_SSB:
1287 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
Julia Lawall39506a52009-08-01 09:51:06 +00001288 (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus),
1289 B44_MDC_RATIO)
Michael Buesch753f4922007-09-19 14:20:30 -07001290 & MDIO_CTRL_MAXF_MASK)));
1291 break;
1292 case SSB_BUSTYPE_PCI:
Michael Buesch753f4922007-09-19 14:20:30 -07001293 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1294 (0x0d & MDIO_CTRL_MAXF_MASK)));
1295 break;
Michael Buesch98a1e2a2009-09-08 19:33:31 +02001296 case SSB_BUSTYPE_PCMCIA:
1297 case SSB_BUSTYPE_SDIO:
1298 WARN_ON(1); /* A device with this bus does not exist. */
1299 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001300 }
1301
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302 br32(bp, B44_MDIO_CTRL);
1303
1304 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1305 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1306 br32(bp, B44_ENET_CTRL);
1307 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1308 } else {
1309 u32 val = br32(bp, B44_DEVCTRL);
1310
1311 if (val & DEVCTRL_EPR) {
1312 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1313 br32(bp, B44_DEVCTRL);
1314 udelay(100);
1315 }
1316 bp->flags |= B44_FLAG_INTERNAL_PHY;
1317 }
1318}
1319
1320/* bp->lock is held. */
1321static void b44_halt(struct b44 *bp)
1322{
1323 b44_disable_ints(bp);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001324 /* reset PHY */
1325 b44_phy_reset(bp);
1326 /* power down PHY */
Joe Perches2fc96ff2010-02-17 15:01:50 +00001327 netdev_info(bp->dev, "powering down PHY\n");
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001328 bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
1329 /* now reset the chip, but without enabling the MAC&PHY
1330 * part of it. This has to be done _after_ we shut down the PHY */
1331 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332}
1333
1334/* bp->lock is held. */
1335static void __b44_set_mac_addr(struct b44 *bp)
1336{
1337 bw32(bp, B44_CAM_CTRL, 0);
1338 if (!(bp->dev->flags & IFF_PROMISC)) {
1339 u32 val;
1340
1341 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1342 val = br32(bp, B44_CAM_CTRL);
1343 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1344 }
1345}
1346
1347static int b44_set_mac_addr(struct net_device *dev, void *p)
1348{
1349 struct b44 *bp = netdev_priv(dev);
1350 struct sockaddr *addr = p;
Michael Buesch753f4922007-09-19 14:20:30 -07001351 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
1353 if (netif_running(dev))
1354 return -EBUSY;
1355
Gary Zambrano391fc092006-03-28 14:57:38 -08001356 if (!is_valid_ether_addr(addr->sa_data))
1357 return -EINVAL;
1358
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1360
1361 spin_lock_irq(&bp->lock);
Michael Buesch753f4922007-09-19 14:20:30 -07001362
1363 val = br32(bp, B44_RXCONFIG);
1364 if (!(val & RXCONFIG_CAM_ABSENT))
1365 __b44_set_mac_addr(bp);
1366
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 spin_unlock_irq(&bp->lock);
1368
1369 return 0;
1370}
1371
1372/* Called at device open time to get the chip ready for
1373 * packet processing. Invoked with bp->lock held.
1374 */
1375static void __b44_set_rx_mode(struct net_device *);
Michael Chan5fc7d612007-01-26 23:59:57 -08001376static void b44_init_hw(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377{
1378 u32 val;
1379
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001380 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Michael Chan5fc7d612007-01-26 23:59:57 -08001381 if (reset_kind == B44_FULL_RESET) {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001382 b44_phy_reset(bp);
1383 b44_setup_phy(bp);
1384 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385
1386 /* Enable CRC32, set proper LED modes and power on PHY */
1387 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1388 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1389
1390 /* This sets the MAC address too. */
1391 __b44_set_rx_mode(bp->dev);
1392
1393 /* MTU + eth header + possible VLAN tag + struct rx_header */
1394 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1395 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1396
1397 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
Michael Chan5fc7d612007-01-26 23:59:57 -08001398 if (reset_kind == B44_PARTIAL_RESET) {
1399 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001400 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Michael Chan5fc7d612007-01-26 23:59:57 -08001401 } else {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001402 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1403 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1404 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001405 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001406 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001408 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1409 bp->rx_prod = bp->rx_pending;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001411 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001412 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413
1414 val = br32(bp, B44_ENET_CTRL);
1415 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1416}
1417
1418static int b44_open(struct net_device *dev)
1419{
1420 struct b44 *bp = netdev_priv(dev);
1421 int err;
1422
Michael Buesch753f4922007-09-19 14:20:30 -07001423 err = b44_alloc_consistent(bp, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424 if (err)
Francois Romieu6c2f4262005-11-07 01:52:57 +01001425 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001427 napi_enable(&bp->napi);
1428
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001430 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431
John W. Linvillee254e9b2005-06-08 15:11:57 -04001432 b44_check_phy(bp);
1433
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001434 err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001435 if (unlikely(err < 0)) {
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001436 napi_disable(&bp->napi);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001437 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001438 b44_free_rings(bp);
1439 b44_free_consistent(bp);
1440 goto out;
1441 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
1443 init_timer(&bp->timer);
1444 bp->timer.expires = jiffies + HZ;
1445 bp->timer.data = (unsigned long) bp;
1446 bp->timer.function = b44_timer;
1447 add_timer(&bp->timer);
1448
1449 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01001450 netif_start_queue(dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001451out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452 return err;
1453}
1454
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455#ifdef CONFIG_NET_POLL_CONTROLLER
1456/*
1457 * Polling receive - used by netconsole and other diagnostic tools
1458 * to allow network i/o with interrupts disabled.
1459 */
1460static void b44_poll_controller(struct net_device *dev)
1461{
1462 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +01001463 b44_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 enable_irq(dev->irq);
1465}
1466#endif
1467
Gary Zambrano725ad802006-06-20 15:34:36 -07001468static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
1469{
1470 u32 i;
1471 u32 *pattern = (u32 *) pp;
1472
1473 for (i = 0; i < bytes; i += sizeof(u32)) {
1474 bw32(bp, B44_FILT_ADDR, table_offset + i);
1475 bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
1476 }
1477}
1478
1479static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
1480{
1481 int magicsync = 6;
1482 int k, j, len = offset;
1483 int ethaddr_bytes = ETH_ALEN;
1484
1485 memset(ppattern + offset, 0xff, magicsync);
1486 for (j = 0; j < magicsync; j++)
1487 set_bit(len++, (unsigned long *) pmask);
1488
1489 for (j = 0; j < B44_MAX_PATTERNS; j++) {
1490 if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
1491 ethaddr_bytes = ETH_ALEN;
1492 else
1493 ethaddr_bytes = B44_PATTERN_SIZE - len;
1494 if (ethaddr_bytes <=0)
1495 break;
1496 for (k = 0; k< ethaddr_bytes; k++) {
1497 ppattern[offset + magicsync +
1498 (j * ETH_ALEN) + k] = macaddr[k];
Stanislav Brabece0188822009-12-08 21:00:22 -08001499 set_bit(len++, (unsigned long *) pmask);
Gary Zambrano725ad802006-06-20 15:34:36 -07001500 }
1501 }
1502 return len - 1;
1503}
1504
1505/* Setup magic packet patterns in the b44 WOL
1506 * pattern matching filter.
1507 */
1508static void b44_setup_pseudo_magicp(struct b44 *bp)
1509{
1510
1511 u32 val;
1512 int plen0, plen1, plen2;
1513 u8 *pwol_pattern;
1514 u8 pwol_mask[B44_PMASK_SIZE];
1515
Yoann Padioleaudd00cc42007-07-19 01:49:03 -07001516 pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
Gary Zambrano725ad802006-06-20 15:34:36 -07001517 if (!pwol_pattern) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00001518 pr_err("Memory not available for WOL\n");
Gary Zambrano725ad802006-06-20 15:34:36 -07001519 return;
1520 }
1521
1522 /* Ipv4 magic packet pattern - pattern 0.*/
Gary Zambrano725ad802006-06-20 15:34:36 -07001523 memset(pwol_mask, 0, B44_PMASK_SIZE);
1524 plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1525 B44_ETHIPV4UDP_HLEN);
1526
1527 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
1528 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
1529
1530 /* Raw ethernet II magic packet pattern - pattern 1 */
1531 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1532 memset(pwol_mask, 0, B44_PMASK_SIZE);
1533 plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1534 ETH_HLEN);
1535
1536 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1537 B44_PATTERN_BASE + B44_PATTERN_SIZE);
1538 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1539 B44_PMASK_BASE + B44_PMASK_SIZE);
1540
1541 /* Ipv6 magic packet pattern - pattern 2 */
1542 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1543 memset(pwol_mask, 0, B44_PMASK_SIZE);
1544 plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1545 B44_ETHIPV6UDP_HLEN);
1546
1547 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1548 B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
1549 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1550 B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
1551
1552 kfree(pwol_pattern);
1553
1554 /* set these pattern's lengths: one less than each real length */
1555 val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
1556 bw32(bp, B44_WKUP_LEN, val);
1557
1558 /* enable wakeup pattern matching */
1559 val = br32(bp, B44_DEVCTRL);
1560 bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
1561
1562}
Gary Zambrano52cafd92006-06-20 15:34:23 -07001563
Michael Buesch753f4922007-09-19 14:20:30 -07001564#ifdef CONFIG_B44_PCI
1565static void b44_setup_wol_pci(struct b44 *bp)
1566{
1567 u16 val;
1568
1569 if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
1570 bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
1571 pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
1572 pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
1573 }
1574}
1575#else
1576static inline void b44_setup_wol_pci(struct b44 *bp) { }
1577#endif /* CONFIG_B44_PCI */
1578
Gary Zambrano52cafd92006-06-20 15:34:23 -07001579static void b44_setup_wol(struct b44 *bp)
1580{
1581 u32 val;
Gary Zambrano52cafd92006-06-20 15:34:23 -07001582
1583 bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
1584
1585 if (bp->flags & B44_FLAG_B0_ANDLATER) {
1586
1587 bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
1588
1589 val = bp->dev->dev_addr[2] << 24 |
1590 bp->dev->dev_addr[3] << 16 |
1591 bp->dev->dev_addr[4] << 8 |
1592 bp->dev->dev_addr[5];
1593 bw32(bp, B44_ADDR_LO, val);
1594
1595 val = bp->dev->dev_addr[0] << 8 |
1596 bp->dev->dev_addr[1];
1597 bw32(bp, B44_ADDR_HI, val);
1598
1599 val = br32(bp, B44_DEVCTRL);
1600 bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
1601
Gary Zambrano725ad802006-06-20 15:34:36 -07001602 } else {
1603 b44_setup_pseudo_magicp(bp);
1604 }
Michael Buesch753f4922007-09-19 14:20:30 -07001605 b44_setup_wol_pci(bp);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001606}
1607
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608static int b44_close(struct net_device *dev)
1609{
1610 struct b44 *bp = netdev_priv(dev);
1611
1612 netif_stop_queue(dev);
1613
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001614 napi_disable(&bp->napi);
Francois Romieuba5eec92005-11-08 23:37:12 +01001615
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 del_timer_sync(&bp->timer);
1617
1618 spin_lock_irq(&bp->lock);
1619
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 b44_halt(bp);
1621 b44_free_rings(bp);
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08001622 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623
1624 spin_unlock_irq(&bp->lock);
1625
1626 free_irq(dev->irq, dev);
1627
Gary Zambrano52cafd92006-06-20 15:34:23 -07001628 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08001629 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001630 b44_setup_wol(bp);
1631 }
1632
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633 b44_free_consistent(bp);
1634
1635 return 0;
1636}
1637
1638static struct net_device_stats *b44_get_stats(struct net_device *dev)
1639{
1640 struct b44 *bp = netdev_priv(dev);
Eric Dumazet553e2332009-05-27 10:34:50 +00001641 struct net_device_stats *nstat = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642 struct b44_hw_stats *hwstat = &bp->hw_stats;
1643
1644 /* Convert HW stats into netdevice stats. */
1645 nstat->rx_packets = hwstat->rx_pkts;
1646 nstat->tx_packets = hwstat->tx_pkts;
1647 nstat->rx_bytes = hwstat->rx_octets;
1648 nstat->tx_bytes = hwstat->tx_octets;
1649 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1650 hwstat->tx_oversize_pkts +
1651 hwstat->tx_underruns +
1652 hwstat->tx_excessive_cols +
1653 hwstat->tx_late_cols);
1654 nstat->multicast = hwstat->tx_multicast_pkts;
1655 nstat->collisions = hwstat->tx_total_cols;
1656
1657 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1658 hwstat->rx_undersize);
1659 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1660 nstat->rx_frame_errors = hwstat->rx_align_errs;
1661 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1662 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1663 hwstat->rx_oversize_pkts +
1664 hwstat->rx_missed_pkts +
1665 hwstat->rx_crc_align_errs +
1666 hwstat->rx_undersize +
1667 hwstat->rx_crc_errs +
1668 hwstat->rx_align_errs +
1669 hwstat->rx_symbol_errs);
1670
1671 nstat->tx_aborted_errors = hwstat->tx_underruns;
1672#if 0
1673 /* Carrier lost counter seems to be broken for some devices */
1674 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1675#endif
1676
1677 return nstat;
1678}
1679
1680static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1681{
Jiri Pirko22bedad32010-04-01 21:22:57 +00001682 struct netdev_hw_addr *ha;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 int i, num_ents;
1684
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001685 num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE);
Jiri Pirko0ddf4772010-02-20 00:13:58 +00001686 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001687 netdev_for_each_mc_addr(ha, dev) {
Jiri Pirko0ddf4772010-02-20 00:13:58 +00001688 if (i == num_ents)
1689 break;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001690 __b44_cam_write(bp, ha->addr, i++ + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 }
1692 return i+1;
1693}
1694
1695static void __b44_set_rx_mode(struct net_device *dev)
1696{
1697 struct b44 *bp = netdev_priv(dev);
1698 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699
1700 val = br32(bp, B44_RXCONFIG);
1701 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
Michael Buesch753f4922007-09-19 14:20:30 -07001702 if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 val |= RXCONFIG_PROMISC;
1704 bw32(bp, B44_RXCONFIG, val);
1705 } else {
Francois Romieu874a6212005-11-07 01:50:46 +01001706 unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
Bill Helfinstinecda22aa2007-04-01 13:10:28 -04001707 int i = 1;
Francois Romieu874a6212005-11-07 01:50:46 +01001708
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 __b44_set_mac_addr(bp);
1710
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001711 if ((dev->flags & IFF_ALLMULTI) ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001712 (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713 val |= RXCONFIG_ALLMULTI;
1714 else
Francois Romieu874a6212005-11-07 01:50:46 +01001715 i = __b44_load_mcast(bp, dev);
Jeff Garzik10badc22006-04-12 18:04:32 -04001716
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001717 for (; i < 64; i++)
Jeff Garzik10badc22006-04-12 18:04:32 -04001718 __b44_cam_write(bp, zero, i);
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001719
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 bw32(bp, B44_RXCONFIG, val);
1721 val = br32(bp, B44_CAM_CTRL);
1722 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1723 }
1724}
1725
1726static void b44_set_rx_mode(struct net_device *dev)
1727{
1728 struct b44 *bp = netdev_priv(dev);
1729
1730 spin_lock_irq(&bp->lock);
1731 __b44_set_rx_mode(dev);
1732 spin_unlock_irq(&bp->lock);
1733}
1734
1735static u32 b44_get_msglevel(struct net_device *dev)
1736{
1737 struct b44 *bp = netdev_priv(dev);
1738 return bp->msg_enable;
1739}
1740
1741static void b44_set_msglevel(struct net_device *dev, u32 value)
1742{
1743 struct b44 *bp = netdev_priv(dev);
1744 bp->msg_enable = value;
1745}
1746
1747static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1748{
1749 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07001750 struct ssb_bus *bus = bp->sdev->bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751
roel kluin27e09552009-07-17 08:01:54 +00001752 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
1753 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
Michael Buesch753f4922007-09-19 14:20:30 -07001754 switch (bus->bustype) {
1755 case SSB_BUSTYPE_PCI:
roel kluin27e09552009-07-17 08:01:54 +00001756 strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
Michael Buesch753f4922007-09-19 14:20:30 -07001757 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001758 case SSB_BUSTYPE_SSB:
roel kluin27e09552009-07-17 08:01:54 +00001759 strlcpy(info->bus_info, "SSB", sizeof(info->bus_info));
Michael Buesch753f4922007-09-19 14:20:30 -07001760 break;
Michael Buesch98a1e2a2009-09-08 19:33:31 +02001761 case SSB_BUSTYPE_PCMCIA:
1762 case SSB_BUSTYPE_SDIO:
1763 WARN_ON(1); /* A device with this bus does not exist. */
1764 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001765 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766}
1767
1768static int b44_nway_reset(struct net_device *dev)
1769{
1770 struct b44 *bp = netdev_priv(dev);
1771 u32 bmcr;
1772 int r;
1773
1774 spin_lock_irq(&bp->lock);
1775 b44_readphy(bp, MII_BMCR, &bmcr);
1776 b44_readphy(bp, MII_BMCR, &bmcr);
1777 r = -EINVAL;
1778 if (bmcr & BMCR_ANENABLE) {
1779 b44_writephy(bp, MII_BMCR,
1780 bmcr | BMCR_ANRESTART);
1781 r = 0;
1782 }
1783 spin_unlock_irq(&bp->lock);
1784
1785 return r;
1786}
1787
1788static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1789{
1790 struct b44 *bp = netdev_priv(dev);
1791
Linus Torvalds1da177e2005-04-16 15:20:36 -07001792 cmd->supported = (SUPPORTED_Autoneg);
1793 cmd->supported |= (SUPPORTED_100baseT_Half |
1794 SUPPORTED_100baseT_Full |
1795 SUPPORTED_10baseT_Half |
1796 SUPPORTED_10baseT_Full |
1797 SUPPORTED_MII);
1798
1799 cmd->advertising = 0;
1800 if (bp->flags & B44_FLAG_ADV_10HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001801 cmd->advertising |= ADVERTISED_10baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 if (bp->flags & B44_FLAG_ADV_10FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001803 cmd->advertising |= ADVERTISED_10baseT_Full;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 if (bp->flags & B44_FLAG_ADV_100HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001805 cmd->advertising |= ADVERTISED_100baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 if (bp->flags & B44_FLAG_ADV_100FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001807 cmd->advertising |= ADVERTISED_100baseT_Full;
1808 cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
David Decotigny70739492011-04-27 18:32:40 +00001809 ethtool_cmd_speed_set(cmd, ((bp->flags & B44_FLAG_100_BASE_T) ?
1810 SPEED_100 : SPEED_10));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1812 DUPLEX_FULL : DUPLEX_HALF;
1813 cmd->port = 0;
1814 cmd->phy_address = bp->phy_addr;
1815 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1816 XCVR_INTERNAL : XCVR_EXTERNAL;
1817 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1818 AUTONEG_DISABLE : AUTONEG_ENABLE;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001819 if (cmd->autoneg == AUTONEG_ENABLE)
1820 cmd->advertising |= ADVERTISED_Autoneg;
1821 if (!netif_running(dev)){
David Decotigny70739492011-04-27 18:32:40 +00001822 ethtool_cmd_speed_set(cmd, 0);
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001823 cmd->duplex = 0xff;
1824 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825 cmd->maxtxpkt = 0;
1826 cmd->maxrxpkt = 0;
1827 return 0;
1828}
1829
1830static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1831{
1832 struct b44 *bp = netdev_priv(dev);
David Decotigny25db0332011-04-27 18:32:39 +00001833 u32 speed = ethtool_cmd_speed(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835 /* We do not support gigabit. */
1836 if (cmd->autoneg == AUTONEG_ENABLE) {
1837 if (cmd->advertising &
1838 (ADVERTISED_1000baseT_Half |
1839 ADVERTISED_1000baseT_Full))
1840 return -EINVAL;
David Decotigny25db0332011-04-27 18:32:39 +00001841 } else if ((speed != SPEED_100 &&
1842 speed != SPEED_10) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843 (cmd->duplex != DUPLEX_HALF &&
1844 cmd->duplex != DUPLEX_FULL)) {
1845 return -EINVAL;
1846 }
1847
1848 spin_lock_irq(&bp->lock);
1849
1850 if (cmd->autoneg == AUTONEG_ENABLE) {
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001851 bp->flags &= ~(B44_FLAG_FORCE_LINK |
1852 B44_FLAG_100_BASE_T |
1853 B44_FLAG_FULL_DUPLEX |
1854 B44_FLAG_ADV_10HALF |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855 B44_FLAG_ADV_10FULL |
1856 B44_FLAG_ADV_100HALF |
1857 B44_FLAG_ADV_100FULL);
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001858 if (cmd->advertising == 0) {
1859 bp->flags |= (B44_FLAG_ADV_10HALF |
1860 B44_FLAG_ADV_10FULL |
1861 B44_FLAG_ADV_100HALF |
1862 B44_FLAG_ADV_100FULL);
1863 } else {
1864 if (cmd->advertising & ADVERTISED_10baseT_Half)
1865 bp->flags |= B44_FLAG_ADV_10HALF;
1866 if (cmd->advertising & ADVERTISED_10baseT_Full)
1867 bp->flags |= B44_FLAG_ADV_10FULL;
1868 if (cmd->advertising & ADVERTISED_100baseT_Half)
1869 bp->flags |= B44_FLAG_ADV_100HALF;
1870 if (cmd->advertising & ADVERTISED_100baseT_Full)
1871 bp->flags |= B44_FLAG_ADV_100FULL;
1872 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873 } else {
1874 bp->flags |= B44_FLAG_FORCE_LINK;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001875 bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
David Decotigny25db0332011-04-27 18:32:39 +00001876 if (speed == SPEED_100)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 bp->flags |= B44_FLAG_100_BASE_T;
1878 if (cmd->duplex == DUPLEX_FULL)
1879 bp->flags |= B44_FLAG_FULL_DUPLEX;
1880 }
1881
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001882 if (netif_running(dev))
1883 b44_setup_phy(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884
1885 spin_unlock_irq(&bp->lock);
1886
1887 return 0;
1888}
1889
1890static void b44_get_ringparam(struct net_device *dev,
1891 struct ethtool_ringparam *ering)
1892{
1893 struct b44 *bp = netdev_priv(dev);
1894
1895 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1896 ering->rx_pending = bp->rx_pending;
1897
1898 /* XXX ethtool lacks a tx_max_pending, oops... */
1899}
1900
1901static int b44_set_ringparam(struct net_device *dev,
1902 struct ethtool_ringparam *ering)
1903{
1904 struct b44 *bp = netdev_priv(dev);
1905
1906 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1907 (ering->rx_mini_pending != 0) ||
1908 (ering->rx_jumbo_pending != 0) ||
1909 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1910 return -EINVAL;
1911
1912 spin_lock_irq(&bp->lock);
1913
1914 bp->rx_pending = ering->rx_pending;
1915 bp->tx_pending = ering->tx_pending;
1916
1917 b44_halt(bp);
1918 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001919 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920 netif_wake_queue(bp->dev);
1921 spin_unlock_irq(&bp->lock);
1922
1923 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001924
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 return 0;
1926}
1927
1928static void b44_get_pauseparam(struct net_device *dev,
1929 struct ethtool_pauseparam *epause)
1930{
1931 struct b44 *bp = netdev_priv(dev);
1932
1933 epause->autoneg =
1934 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1935 epause->rx_pause =
1936 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1937 epause->tx_pause =
1938 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1939}
1940
1941static int b44_set_pauseparam(struct net_device *dev,
1942 struct ethtool_pauseparam *epause)
1943{
1944 struct b44 *bp = netdev_priv(dev);
1945
1946 spin_lock_irq(&bp->lock);
1947 if (epause->autoneg)
1948 bp->flags |= B44_FLAG_PAUSE_AUTO;
1949 else
1950 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1951 if (epause->rx_pause)
1952 bp->flags |= B44_FLAG_RX_PAUSE;
1953 else
1954 bp->flags &= ~B44_FLAG_RX_PAUSE;
1955 if (epause->tx_pause)
1956 bp->flags |= B44_FLAG_TX_PAUSE;
1957 else
1958 bp->flags &= ~B44_FLAG_TX_PAUSE;
1959 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1960 b44_halt(bp);
1961 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001962 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001963 } else {
1964 __b44_set_flow_ctrl(bp, bp->flags);
1965 }
1966 spin_unlock_irq(&bp->lock);
1967
1968 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 return 0;
1971}
1972
Francois Romieu33539302005-11-07 01:51:34 +01001973static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1974{
1975 switch(stringset) {
1976 case ETH_SS_STATS:
1977 memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
1978 break;
1979 }
1980}
1981
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001982static int b44_get_sset_count(struct net_device *dev, int sset)
Francois Romieu33539302005-11-07 01:51:34 +01001983{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001984 switch (sset) {
1985 case ETH_SS_STATS:
1986 return ARRAY_SIZE(b44_gstrings);
1987 default:
1988 return -EOPNOTSUPP;
1989 }
Francois Romieu33539302005-11-07 01:51:34 +01001990}
1991
1992static void b44_get_ethtool_stats(struct net_device *dev,
1993 struct ethtool_stats *stats, u64 *data)
1994{
1995 struct b44 *bp = netdev_priv(dev);
1996 u32 *val = &bp->hw_stats.tx_good_octets;
1997 u32 i;
1998
1999 spin_lock_irq(&bp->lock);
2000
2001 b44_stats_update(bp);
2002
2003 for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
2004 *data++ = *val++;
2005
2006 spin_unlock_irq(&bp->lock);
2007}
2008
Gary Zambrano52cafd92006-06-20 15:34:23 -07002009static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2010{
2011 struct b44 *bp = netdev_priv(dev);
2012
2013 wol->supported = WAKE_MAGIC;
2014 if (bp->flags & B44_FLAG_WOL_ENABLE)
2015 wol->wolopts = WAKE_MAGIC;
2016 else
2017 wol->wolopts = 0;
2018 memset(&wol->sopass, 0, sizeof(wol->sopass));
2019}
2020
2021static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2022{
2023 struct b44 *bp = netdev_priv(dev);
2024
2025 spin_lock_irq(&bp->lock);
2026 if (wol->wolopts & WAKE_MAGIC)
2027 bp->flags |= B44_FLAG_WOL_ENABLE;
2028 else
2029 bp->flags &= ~B44_FLAG_WOL_ENABLE;
2030 spin_unlock_irq(&bp->lock);
2031
2032 return 0;
2033}
2034
Jeff Garzik7282d492006-09-13 14:30:00 -04002035static const struct ethtool_ops b44_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002036 .get_drvinfo = b44_get_drvinfo,
2037 .get_settings = b44_get_settings,
2038 .set_settings = b44_set_settings,
2039 .nway_reset = b44_nway_reset,
2040 .get_link = ethtool_op_get_link,
Gary Zambrano52cafd92006-06-20 15:34:23 -07002041 .get_wol = b44_get_wol,
2042 .set_wol = b44_set_wol,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043 .get_ringparam = b44_get_ringparam,
2044 .set_ringparam = b44_set_ringparam,
2045 .get_pauseparam = b44_get_pauseparam,
2046 .set_pauseparam = b44_set_pauseparam,
2047 .get_msglevel = b44_get_msglevel,
2048 .set_msglevel = b44_set_msglevel,
Francois Romieu33539302005-11-07 01:51:34 +01002049 .get_strings = b44_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002050 .get_sset_count = b44_get_sset_count,
Francois Romieu33539302005-11-07 01:51:34 +01002051 .get_ethtool_stats = b44_get_ethtool_stats,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052};
2053
2054static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2055{
2056 struct mii_ioctl_data *data = if_mii(ifr);
2057 struct b44 *bp = netdev_priv(dev);
Francois Romieu34105722005-11-30 22:32:13 +01002058 int err = -EINVAL;
2059
2060 if (!netif_running(dev))
2061 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002062
2063 spin_lock_irq(&bp->lock);
2064 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
2065 spin_unlock_irq(&bp->lock);
Francois Romieu34105722005-11-30 22:32:13 +01002066out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067 return err;
2068}
2069
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070static int __devinit b44_get_invariants(struct b44 *bp)
2071{
Michael Buesch753f4922007-09-19 14:20:30 -07002072 struct ssb_device *sdev = bp->sdev;
2073 int err = 0;
2074 u8 *addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075
Michael Buesch753f4922007-09-19 14:20:30 -07002076 bp->dma_offset = ssb_dma_translation(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077
Michael Buesch753f4922007-09-19 14:20:30 -07002078 if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
2079 instance > 1) {
Larry Finger458414b2007-11-09 16:56:10 -06002080 addr = sdev->bus->sprom.et1mac;
2081 bp->phy_addr = sdev->bus->sprom.et1phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002082 } else {
Larry Finger458414b2007-11-09 16:56:10 -06002083 addr = sdev->bus->sprom.et0mac;
2084 bp->phy_addr = sdev->bus->sprom.et0phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002085 }
Michael Buesch5ea79632008-03-25 18:04:46 +01002086 /* Some ROMs have buggy PHY addresses with the high
2087 * bits set (sign extension?). Truncate them to a
2088 * valid PHY address. */
2089 bp->phy_addr &= 0x1F;
2090
Michael Buesch753f4922007-09-19 14:20:30 -07002091 memcpy(bp->dev->dev_addr, addr, 6);
Gary Zambrano391fc092006-03-28 14:57:38 -08002092
2093 if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
Joe Perches2fc96ff2010-02-17 15:01:50 +00002094 pr_err("Invalid MAC address found in EEPROM\n");
Gary Zambrano391fc092006-03-28 14:57:38 -08002095 return -EINVAL;
2096 }
2097
John W. Linville2160de52005-09-12 10:48:55 -04002098 memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100 bp->imask = IMASK_DEF;
2101
Jeff Garzik10badc22006-04-12 18:04:32 -04002102 /* XXX - really required?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 bp->flags |= B44_FLAG_BUGGY_TXPTR;
Michael Buesch753f4922007-09-19 14:20:30 -07002104 */
Gary Zambrano52cafd92006-06-20 15:34:23 -07002105
Michael Buesch753f4922007-09-19 14:20:30 -07002106 if (bp->sdev->id.revision >= 7)
2107 bp->flags |= B44_FLAG_B0_ANDLATER;
Gary Zambrano52cafd92006-06-20 15:34:23 -07002108
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109 return err;
2110}
2111
Stephen Hemminger403413e2009-01-07 18:10:49 -08002112static const struct net_device_ops b44_netdev_ops = {
2113 .ndo_open = b44_open,
2114 .ndo_stop = b44_close,
2115 .ndo_start_xmit = b44_start_xmit,
2116 .ndo_get_stats = b44_get_stats,
2117 .ndo_set_multicast_list = b44_set_rx_mode,
2118 .ndo_set_mac_address = b44_set_mac_addr,
2119 .ndo_validate_addr = eth_validate_addr,
2120 .ndo_do_ioctl = b44_ioctl,
2121 .ndo_tx_timeout = b44_tx_timeout,
2122 .ndo_change_mtu = b44_change_mtu,
2123#ifdef CONFIG_NET_POLL_CONTROLLER
2124 .ndo_poll_controller = b44_poll_controller,
2125#endif
2126};
2127
Michael Buesch753f4922007-09-19 14:20:30 -07002128static int __devinit b44_init_one(struct ssb_device *sdev,
2129 const struct ssb_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131 struct net_device *dev;
2132 struct b44 *bp;
Joe Perches0795af52007-10-03 17:59:30 -07002133 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134
Michael Buesch753f4922007-09-19 14:20:30 -07002135 instance++;
2136
Joe Perches7329f0d2011-07-05 07:43:46 +00002137 pr_info_once("%s version %s\n", DRV_DESCRIPTION, DRV_MODULE_VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138
2139 dev = alloc_etherdev(sizeof(*bp));
2140 if (!dev) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002141 dev_err(sdev->dev, "Etherdev alloc failed, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142 err = -ENOMEM;
Michael Buesch753f4922007-09-19 14:20:30 -07002143 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144 }
2145
Michael Buesch753f4922007-09-19 14:20:30 -07002146 SET_NETDEV_DEV(dev, sdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147
2148 /* No interesting netdevice features in this card... */
2149 dev->features |= 0;
2150
2151 bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07002152 bp->sdev = sdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153 bp->dev = dev;
Eric Dumazeta58c8912009-01-15 15:29:35 -08002154 bp->force_copybreak = 0;
Francois Romieu874a6212005-11-07 01:50:46 +01002155
2156 bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157
2158 spin_lock_init(&bp->lock);
2159
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160 bp->rx_pending = B44_DEF_RX_RING_PENDING;
2161 bp->tx_pending = B44_DEF_TX_RING_PENDING;
2162
Stephen Hemminger403413e2009-01-07 18:10:49 -08002163 dev->netdev_ops = &b44_netdev_ops;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002164 netif_napi_add(dev, &bp->napi, b44_poll, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165 dev->watchdog_timeo = B44_TX_TIMEOUT;
Michael Buesch753f4922007-09-19 14:20:30 -07002166 dev->irq = sdev->irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
2168
Michael Buesch753f4922007-09-19 14:20:30 -07002169 err = ssb_bus_powerup(sdev->bus, 0);
2170 if (err) {
2171 dev_err(sdev->dev,
2172 "Failed to powerup the bus\n");
2173 goto err_out_free_dev;
2174 }
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07002175
2176 if (dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(30)) ||
2177 dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(30))) {
Michael Buesch753f4922007-09-19 14:20:30 -07002178 dev_err(sdev->dev,
Joe Perches2fc96ff2010-02-17 15:01:50 +00002179 "Required 30BIT DMA mask unsupported by the system\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002180 goto err_out_powerdown;
2181 }
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07002182
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183 err = b44_get_invariants(bp);
2184 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002185 dev_err(sdev->dev,
Joe Perches2fc96ff2010-02-17 15:01:50 +00002186 "Problem fetching invariants of chip, aborting\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002187 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188 }
2189
2190 bp->mii_if.dev = dev;
2191 bp->mii_if.mdio_read = b44_mii_read;
2192 bp->mii_if.mdio_write = b44_mii_write;
2193 bp->mii_if.phy_id = bp->phy_addr;
2194 bp->mii_if.phy_id_mask = 0x1f;
2195 bp->mii_if.reg_num_mask = 0x1f;
2196
2197 /* By default, advertise all speed/duplex settings. */
2198 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
2199 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
2200
2201 /* By default, auto-negotiate PAUSE. */
2202 bp->flags |= B44_FLAG_PAUSE_AUTO;
2203
2204 err = register_netdev(dev);
2205 if (err) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002206 dev_err(sdev->dev, "Cannot register net device, aborting\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002207 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002208 }
2209
Paul Fertserbcf64aa2010-10-11 15:45:35 -07002210 netif_carrier_off(dev);
2211
Michael Buesch753f4922007-09-19 14:20:30 -07002212 ssb_set_drvdata(sdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213
Jeff Garzik10badc22006-04-12 18:04:32 -04002214 /* Chip reset provides power to the b44 MAC & PCI cores, which
Gary Zambrano5c513122006-03-29 17:12:05 -05002215 * is necessary for MAC register access.
Jeff Garzik10badc22006-04-12 18:04:32 -04002216 */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002217 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Gary Zambrano5c513122006-03-29 17:12:05 -05002218
Hauke Mehrtens8850dce2010-02-20 10:55:25 +00002219 /* do a phy reset to test if there is an active phy */
2220 if (b44_phy_reset(bp) < 0)
2221 bp->phy_addr = B44_PHY_ADDR_NO_PHY;
2222
Joe Perches7329f0d2011-07-05 07:43:46 +00002223 netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002224
2225 return 0;
2226
Michael Buesch753f4922007-09-19 14:20:30 -07002227err_out_powerdown:
2228 ssb_bus_may_powerdown(sdev->bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229
2230err_out_free_dev:
2231 free_netdev(dev);
2232
Michael Buesch753f4922007-09-19 14:20:30 -07002233out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 return err;
2235}
2236
Michael Buesch753f4922007-09-19 14:20:30 -07002237static void __devexit b44_remove_one(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238{
Michael Buesch753f4922007-09-19 14:20:30 -07002239 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002240
Francois Romieu874a6212005-11-07 01:50:46 +01002241 unregister_netdev(dev);
Michael Buesche92aa632009-02-26 22:35:02 -08002242 ssb_device_disable(sdev, 0);
Michael Buesch753f4922007-09-19 14:20:30 -07002243 ssb_bus_may_powerdown(sdev->bus);
Francois Romieu874a6212005-11-07 01:50:46 +01002244 free_netdev(dev);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002245 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Michael Buesch753f4922007-09-19 14:20:30 -07002246 ssb_set_drvdata(sdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002247}
2248
Michael Buesch753f4922007-09-19 14:20:30 -07002249static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002250{
Michael Buesch753f4922007-09-19 14:20:30 -07002251 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002252 struct b44 *bp = netdev_priv(dev);
2253
Michael Buesch753f4922007-09-19 14:20:30 -07002254 if (!netif_running(dev))
2255 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256
2257 del_timer_sync(&bp->timer);
2258
Jeff Garzik10badc22006-04-12 18:04:32 -04002259 spin_lock_irq(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260
2261 b44_halt(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04002262 netif_carrier_off(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263 netif_device_detach(bp->dev);
2264 b44_free_rings(bp);
2265
2266 spin_unlock_irq(&bp->lock);
Pavel Machek46e17852005-10-28 15:14:47 -07002267
2268 free_irq(dev->irq, dev);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002269 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08002270 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002271 b44_setup_wol(bp);
2272 }
Michael Buesch753f4922007-09-19 14:20:30 -07002273
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002274 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002275 return 0;
2276}
2277
Michael Buesch753f4922007-09-19 14:20:30 -07002278static int b44_resume(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279{
Michael Buesch753f4922007-09-19 14:20:30 -07002280 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281 struct b44 *bp = netdev_priv(dev);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002282 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283
Michael Buesch753f4922007-09-19 14:20:30 -07002284 rc = ssb_bus_powerup(sdev->bus, 0);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002285 if (rc) {
Michael Buesch753f4922007-09-19 14:20:30 -07002286 dev_err(sdev->dev,
2287 "Failed to powerup the bus\n");
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002288 return rc;
2289 }
2290
Linus Torvalds1da177e2005-04-16 15:20:36 -07002291 if (!netif_running(dev))
2292 return 0;
2293
James Hoganafed4cc2010-10-17 01:48:59 +00002294 spin_lock_irq(&bp->lock);
2295 b44_init_rings(bp);
2296 b44_init_hw(bp, B44_FULL_RESET);
2297 spin_unlock_irq(&bp->lock);
2298
2299 /*
2300 * As a shared interrupt, the handler can be called immediately. To be
2301 * able to check the interrupt status the hardware must already be
2302 * powered back on (b44_init_hw).
2303 */
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002304 rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
2305 if (rc) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002306 netdev_err(dev, "request_irq failed\n");
James Hoganafed4cc2010-10-17 01:48:59 +00002307 spin_lock_irq(&bp->lock);
2308 b44_halt(bp);
2309 b44_free_rings(bp);
2310 spin_unlock_irq(&bp->lock);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002311 return rc;
2312 }
Pavel Machek46e17852005-10-28 15:14:47 -07002313
Linus Torvalds1da177e2005-04-16 15:20:36 -07002314 netif_device_attach(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01002317 netif_wake_queue(dev);
Stephen Hemmingera72a8172007-06-04 13:25:37 -07002318
2319 mod_timer(&bp->timer, jiffies + 1);
2320
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321 return 0;
2322}
2323
Michael Buesch753f4922007-09-19 14:20:30 -07002324static struct ssb_driver b44_ssb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325 .name = DRV_MODULE_NAME,
Michael Buesch753f4922007-09-19 14:20:30 -07002326 .id_table = b44_ssb_tbl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327 .probe = b44_init_one,
2328 .remove = __devexit_p(b44_remove_one),
Michael Buesch753f4922007-09-19 14:20:30 -07002329 .suspend = b44_suspend,
2330 .resume = b44_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331};
2332
Hauke Mehrtenscd155982011-06-21 20:57:16 +02002333static inline int __init b44_pci_init(void)
Michael Buesch753f4922007-09-19 14:20:30 -07002334{
2335 int err = 0;
2336#ifdef CONFIG_B44_PCI
2337 err = ssb_pcihost_register(&b44_pci_driver);
2338#endif
2339 return err;
2340}
2341
Hauke Mehrtenscd155982011-06-21 20:57:16 +02002342static inline void __exit b44_pci_exit(void)
Michael Buesch753f4922007-09-19 14:20:30 -07002343{
2344#ifdef CONFIG_B44_PCI
2345 ssb_pcihost_unregister(&b44_pci_driver);
2346#endif
2347}
2348
Linus Torvalds1da177e2005-04-16 15:20:36 -07002349static int __init b44_init(void)
2350{
John W. Linville9f38c632005-10-18 21:30:59 -04002351 unsigned int dma_desc_align_size = dma_get_cache_alignment();
Michael Buesch753f4922007-09-19 14:20:30 -07002352 int err;
John W. Linville9f38c632005-10-18 21:30:59 -04002353
2354 /* Setup paramaters for syncing RX/TX DMA descriptors */
Alan Cox22d4d772006-01-17 17:53:56 +00002355 dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
John W. Linville9f38c632005-10-18 21:30:59 -04002356
Michael Buesch753f4922007-09-19 14:20:30 -07002357 err = b44_pci_init();
2358 if (err)
2359 return err;
2360 err = ssb_driver_register(&b44_ssb_driver);
2361 if (err)
2362 b44_pci_exit();
2363 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364}
2365
2366static void __exit b44_cleanup(void)
2367{
Michael Buesch753f4922007-09-19 14:20:30 -07002368 ssb_driver_unregister(&b44_ssb_driver);
2369 b44_pci_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370}
2371
2372module_init(b44_init);
2373module_exit(b44_cleanup);
2374