blob: c6e86315b3f8df37aa2ac1a767ac46fc1b5eba60 [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 Buesch753f4922007-09-19 14:20:30 -07008 * Copyright (C) 2007 Michael Buesch <mb@bu3sch.de>
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>
Andrew Morton89358f92005-10-28 16:38:02 -040028#include <linux/dma-mapping.h>
Michael Buesch753f4922007-09-19 14:20:30 -070029#include <linux/ssb/ssb.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090030#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32#include <asm/uaccess.h>
33#include <asm/io.h>
34#include <asm/irq.h>
35
Michael Buesch753f4922007-09-19 14:20:30 -070036
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include "b44.h"
38
39#define DRV_MODULE_NAME "b44"
Michael Buesch753f4922007-09-19 14:20:30 -070040#define DRV_MODULE_VERSION "2.0"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42#define B44_DEF_MSG_ENABLE \
43 (NETIF_MSG_DRV | \
44 NETIF_MSG_PROBE | \
45 NETIF_MSG_LINK | \
46 NETIF_MSG_TIMER | \
47 NETIF_MSG_IFDOWN | \
48 NETIF_MSG_IFUP | \
49 NETIF_MSG_RX_ERR | \
50 NETIF_MSG_TX_ERR)
51
52/* length of time before we decide the hardware is borked,
53 * and dev->tx_timeout() should be called to fix the problem
54 */
55#define B44_TX_TIMEOUT (5 * HZ)
56
57/* hardware minimum and maximum for a single frame's data payload */
58#define B44_MIN_MTU 60
59#define B44_MAX_MTU 1500
60
61#define B44_RX_RING_SIZE 512
62#define B44_DEF_RX_RING_PENDING 200
63#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
64 B44_RX_RING_SIZE)
65#define B44_TX_RING_SIZE 512
66#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
67#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
68 B44_TX_RING_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70#define TX_RING_GAP(BP) \
71 (B44_TX_RING_SIZE - (BP)->tx_pending)
72#define TX_BUFFS_AVAIL(BP) \
73 (((BP)->tx_cons <= (BP)->tx_prod) ? \
74 (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
75 (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
76#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
77
Felix Fietkau4ca85792009-01-09 02:39:57 +000078#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
79#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81/* minimum number of free TX descriptors required to wake up TX process */
82#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
83
Gary Zambrano725ad802006-06-20 15:34:36 -070084/* b44 internal pattern match filter info */
85#define B44_PATTERN_BASE 0x400
86#define B44_PATTERN_SIZE 0x80
87#define B44_PMASK_BASE 0x600
88#define B44_PMASK_SIZE 0x10
89#define B44_MAX_PATTERNS 16
90#define B44_ETHIPV6UDP_HLEN 62
91#define B44_ETHIPV4UDP_HLEN 42
92
Linus Torvalds1da177e2005-04-16 15:20:36 -070093static char version[] __devinitdata =
Michael Buesch753f4922007-09-19 14:20:30 -070094 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
Michael Buesch753f4922007-09-19 14:20:30 -070096MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
97MODULE_DESCRIPTION("Broadcom 44xx/47xx 10/100 PCI ethernet driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070098MODULE_LICENSE("GPL");
99MODULE_VERSION(DRV_MODULE_VERSION);
100
101static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
102module_param(b44_debug, int, 0);
103MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
104
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Michael Buesch753f4922007-09-19 14:20:30 -0700106#ifdef CONFIG_B44_PCI
Alexey Dobriyana3aa1882010-01-07 11:58:11 +0000107static DEFINE_PCI_DEVICE_TABLE(b44_pci_tbl) = {
Michael Buesch753f4922007-09-19 14:20:30 -0700108 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
109 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
110 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
111 { 0 } /* terminate list with empty entry */
112};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
114
Michael Buesch753f4922007-09-19 14:20:30 -0700115static struct pci_driver b44_pci_driver = {
116 .name = DRV_MODULE_NAME,
117 .id_table = b44_pci_tbl,
118};
119#endif /* CONFIG_B44_PCI */
120
121static const struct ssb_device_id b44_ssb_tbl[] = {
122 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
123 SSB_DEVTABLE_END
124};
125MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
126
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127static void b44_halt(struct b44 *);
128static void b44_init_rings(struct b44 *);
Michael Chan5fc7d612007-01-26 23:59:57 -0800129
130#define B44_FULL_RESET 1
131#define B44_FULL_RESET_SKIP_PHY 2
132#define B44_PARTIAL_RESET 3
Miguel Botónfedb0ee2008-01-01 01:17:54 +0100133#define B44_CHIP_RESET_FULL 4
134#define B44_CHIP_RESET_PARTIAL 5
Michael Chan5fc7d612007-01-26 23:59:57 -0800135
Gary Zambrano00e8b3a2006-06-20 15:34:26 -0700136static void b44_init_hw(struct b44 *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
John W. Linville9f38c632005-10-18 21:30:59 -0400138static int dma_desc_sync_size;
Michael Buesch753f4922007-09-19 14:20:30 -0700139static int instance;
John W. Linville9f38c632005-10-18 21:30:59 -0400140
Francois Romieu33539302005-11-07 01:51:34 +0100141static const char b44_gstrings[][ETH_GSTRING_LEN] = {
142#define _B44(x...) # x,
143B44_STAT_REG_DECLARE
144#undef _B44
145};
146
Michael Buesch753f4922007-09-19 14:20:30 -0700147static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
148 dma_addr_t dma_base,
149 unsigned long offset,
150 enum dma_data_direction dir)
John W. Linville9f38c632005-10-18 21:30:59 -0400151{
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700152 dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
153 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400154}
155
Michael Buesch753f4922007-09-19 14:20:30 -0700156static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
157 dma_addr_t dma_base,
158 unsigned long offset,
159 enum dma_data_direction dir)
John W. Linville9f38c632005-10-18 21:30:59 -0400160{
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700161 dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
162 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400163}
164
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
166{
Michael Buesch753f4922007-09-19 14:20:30 -0700167 return ssb_read32(bp->sdev, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168}
169
Jeff Garzik10badc22006-04-12 18:04:32 -0400170static inline void bw32(const struct b44 *bp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 unsigned long reg, unsigned long val)
172{
Michael Buesch753f4922007-09-19 14:20:30 -0700173 ssb_write32(bp->sdev, reg, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174}
175
176static int b44_wait_bit(struct b44 *bp, unsigned long reg,
177 u32 bit, unsigned long timeout, const int clear)
178{
179 unsigned long i;
180
181 for (i = 0; i < timeout; i++) {
182 u32 val = br32(bp, reg);
183
184 if (clear && !(val & bit))
185 break;
186 if (!clear && (val & bit))
187 break;
188 udelay(10);
189 }
190 if (i == timeout) {
Jochen Friedrichf6ca0572010-02-12 10:11:54 +0000191 if (net_ratelimit())
Joe Perches2fc96ff2010-02-17 15:01:50 +0000192 netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n",
193 bit, reg, clear ? "clear" : "set");
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 return -ENODEV;
196 }
197 return 0;
198}
199
Michael Buesch753f4922007-09-19 14:20:30 -0700200static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201{
202 u32 val;
203
Michael Buesch753f4922007-09-19 14:20:30 -0700204 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
205 (index << CAM_CTRL_INDEX_SHIFT)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Michael Buesch753f4922007-09-19 14:20:30 -0700207 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Michael Buesch753f4922007-09-19 14:20:30 -0700209 val = br32(bp, B44_CAM_DATA_LO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Michael Buesch753f4922007-09-19 14:20:30 -0700211 data[2] = (val >> 24) & 0xFF;
212 data[3] = (val >> 16) & 0xFF;
213 data[4] = (val >> 8) & 0xFF;
214 data[5] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
Michael Buesch753f4922007-09-19 14:20:30 -0700216 val = br32(bp, B44_CAM_DATA_HI);
217
218 data[0] = (val >> 8) & 0xFF;
219 data[1] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220}
221
Michael Buesch753f4922007-09-19 14:20:30 -0700222static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223{
224 u32 val;
225
226 val = ((u32) data[2]) << 24;
227 val |= ((u32) data[3]) << 16;
228 val |= ((u32) data[4]) << 8;
229 val |= ((u32) data[5]) << 0;
230 bw32(bp, B44_CAM_DATA_LO, val);
Jeff Garzik10badc22006-04-12 18:04:32 -0400231 val = (CAM_DATA_HI_VALID |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 (((u32) data[0]) << 8) |
233 (((u32) data[1]) << 0));
234 bw32(bp, B44_CAM_DATA_HI, val);
235 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
236 (index << CAM_CTRL_INDEX_SHIFT)));
Jeff Garzik10badc22006-04-12 18:04:32 -0400237 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238}
239
240static inline void __b44_disable_ints(struct b44 *bp)
241{
242 bw32(bp, B44_IMASK, 0);
243}
244
245static void b44_disable_ints(struct b44 *bp)
246{
247 __b44_disable_ints(bp);
248
249 /* Flush posted writes. */
250 br32(bp, B44_IMASK);
251}
252
253static void b44_enable_ints(struct b44 *bp)
254{
255 bw32(bp, B44_IMASK, bp->imask);
256}
257
Michael Buesch753f4922007-09-19 14:20:30 -0700258static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259{
260 int err;
261
262 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
263 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
264 (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
Michael Buesch753f4922007-09-19 14:20:30 -0700265 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 (reg << MDIO_DATA_RA_SHIFT) |
267 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
268 err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
269 *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
270
271 return err;
272}
273
Michael Buesch753f4922007-09-19 14:20:30 -0700274static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275{
276 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
277 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
278 (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
Michael Buesch753f4922007-09-19 14:20:30 -0700279 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 (reg << MDIO_DATA_RA_SHIFT) |
281 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
282 (val & MDIO_DATA_DATA)));
283 return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
284}
285
Michael Buesch753f4922007-09-19 14:20:30 -0700286static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
287{
288 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
289 return 0;
290
291 return __b44_readphy(bp, bp->phy_addr, reg, val);
292}
293
294static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
295{
296 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
297 return 0;
298
299 return __b44_writephy(bp, bp->phy_addr, reg, val);
300}
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302/* miilib interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303static int b44_mii_read(struct net_device *dev, int phy_id, int location)
304{
305 u32 val;
306 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -0700307 int rc = __b44_readphy(bp, phy_id, location, &val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 if (rc)
309 return 0xffffffff;
310 return val;
311}
312
313static void b44_mii_write(struct net_device *dev, int phy_id, int location,
314 int val)
315{
316 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -0700317 __b44_writephy(bp, phy_id, location, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318}
319
320static int b44_phy_reset(struct b44 *bp)
321{
322 u32 val;
323 int err;
324
Michael Buesch753f4922007-09-19 14:20:30 -0700325 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
326 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
328 if (err)
329 return err;
330 udelay(100);
331 err = b44_readphy(bp, MII_BMCR, &val);
332 if (!err) {
333 if (val & BMCR_RESET) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000334 netdev_err(bp->dev, "PHY Reset would not complete\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 err = -ENODEV;
336 }
337 }
338
Hauke Mehrtens8850dce2010-02-20 10:55:25 +0000339 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340}
341
342static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
343{
344 u32 val;
345
346 bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
347 bp->flags |= pause_flags;
348
349 val = br32(bp, B44_RXCONFIG);
350 if (pause_flags & B44_FLAG_RX_PAUSE)
351 val |= RXCONFIG_FLOW;
352 else
353 val &= ~RXCONFIG_FLOW;
354 bw32(bp, B44_RXCONFIG, val);
355
356 val = br32(bp, B44_MAC_FLOW);
357 if (pause_flags & B44_FLAG_TX_PAUSE)
358 val |= (MAC_FLOW_PAUSE_ENAB |
359 (0xc0 & MAC_FLOW_RX_HI_WATER));
360 else
361 val &= ~MAC_FLOW_PAUSE_ENAB;
362 bw32(bp, B44_MAC_FLOW, val);
363}
364
365static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
366{
Jeff Garzik10badc22006-04-12 18:04:32 -0400367 u32 pause_enab = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700369 /* The driver supports only rx pause by default because
Jeff Garzik10badc22006-04-12 18:04:32 -0400370 the b44 mac tx pause mechanism generates excessive
371 pause frames.
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700372 Use ethtool to turn on b44 tx pause if necessary.
373 */
374 if ((local & ADVERTISE_PAUSE_CAP) &&
Jeff Garzik10badc22006-04-12 18:04:32 -0400375 (local & ADVERTISE_PAUSE_ASYM)){
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700376 if ((remote & LPA_PAUSE_ASYM) &&
377 !(remote & LPA_PAUSE_CAP))
378 pause_enab |= B44_FLAG_RX_PAUSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 }
380
381 __b44_set_flow_ctrl(bp, pause_enab);
382}
383
Michael Buesch753f4922007-09-19 14:20:30 -0700384#ifdef SSB_DRIVER_MIPS
385extern char *nvram_get(char *name);
386static void b44_wap54g10_workaround(struct b44 *bp)
387{
388 const char *str;
389 u32 val;
390 int err;
391
392 /*
393 * workaround for bad hardware design in Linksys WAP54G v1.0
394 * see https://dev.openwrt.org/ticket/146
395 * check and reset bit "isolate"
396 */
397 str = nvram_get("boardnum");
398 if (!str)
399 return;
400 if (simple_strtoul(str, NULL, 0) == 2) {
401 err = __b44_readphy(bp, 0, MII_BMCR, &val);
402 if (err)
403 goto error;
404 if (!(val & BMCR_ISOLATE))
405 return;
406 val &= ~BMCR_ISOLATE;
407 err = __b44_writephy(bp, 0, MII_BMCR, val);
408 if (err)
409 goto error;
410 }
411 return;
412error:
Joe Perches2fc96ff2010-02-17 15:01:50 +0000413 pr_warning("PHY: cannot reset MII transceiver isolate bit\n");
Michael Buesch753f4922007-09-19 14:20:30 -0700414}
415#else
416static inline void b44_wap54g10_workaround(struct b44 *bp)
417{
418}
419#endif
420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421static int b44_setup_phy(struct b44 *bp)
422{
423 u32 val;
424 int err;
425
Michael Buesch753f4922007-09-19 14:20:30 -0700426 b44_wap54g10_workaround(bp);
427
428 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
429 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
431 goto out;
432 if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
433 val & MII_ALEDCTRL_ALLMSK)) != 0)
434 goto out;
435 if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
436 goto out;
437 if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
438 val | MII_TLEDCTRL_ENABLE)) != 0)
439 goto out;
440
441 if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
442 u32 adv = ADVERTISE_CSMA;
443
444 if (bp->flags & B44_FLAG_ADV_10HALF)
445 adv |= ADVERTISE_10HALF;
446 if (bp->flags & B44_FLAG_ADV_10FULL)
447 adv |= ADVERTISE_10FULL;
448 if (bp->flags & B44_FLAG_ADV_100HALF)
449 adv |= ADVERTISE_100HALF;
450 if (bp->flags & B44_FLAG_ADV_100FULL)
451 adv |= ADVERTISE_100FULL;
452
453 if (bp->flags & B44_FLAG_PAUSE_AUTO)
454 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
455
456 if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
457 goto out;
458 if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
459 BMCR_ANRESTART))) != 0)
460 goto out;
461 } else {
462 u32 bmcr;
463
464 if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
465 goto out;
466 bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
467 if (bp->flags & B44_FLAG_100_BASE_T)
468 bmcr |= BMCR_SPEED100;
469 if (bp->flags & B44_FLAG_FULL_DUPLEX)
470 bmcr |= BMCR_FULLDPLX;
471 if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
472 goto out;
473
474 /* Since we will not be negotiating there is no safe way
475 * to determine if the link partner supports flow control
476 * or not. So just disable it completely in this case.
477 */
478 b44_set_flow_ctrl(bp, 0, 0);
479 }
480
481out:
482 return err;
483}
484
485static void b44_stats_update(struct b44 *bp)
486{
487 unsigned long reg;
488 u32 *val;
489
490 val = &bp->hw_stats.tx_good_octets;
491 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
492 *val++ += br32(bp, reg);
493 }
Francois Romieu33539302005-11-07 01:51:34 +0100494
495 /* Pad */
496 reg += 8*4UL;
497
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
499 *val++ += br32(bp, reg);
500 }
501}
502
503static void b44_link_report(struct b44 *bp)
504{
505 if (!netif_carrier_ok(bp->dev)) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000506 netdev_info(bp->dev, "Link is down\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 } else {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000508 netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n",
509 (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
510 (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
Joe Perches2fc96ff2010-02-17 15:01:50 +0000512 netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n",
513 (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
514 (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 }
516}
517
518static void b44_check_phy(struct b44 *bp)
519{
520 u32 bmsr, aux;
521
Michael Buesch753f4922007-09-19 14:20:30 -0700522 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
523 bp->flags |= B44_FLAG_100_BASE_T;
524 bp->flags |= B44_FLAG_FULL_DUPLEX;
525 if (!netif_carrier_ok(bp->dev)) {
526 u32 val = br32(bp, B44_TX_CTRL);
527 val |= TX_CTRL_DUPLEX;
528 bw32(bp, B44_TX_CTRL, val);
529 netif_carrier_on(bp->dev);
530 b44_link_report(bp);
531 }
532 return;
533 }
534
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
536 !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
537 (bmsr != 0xffff)) {
538 if (aux & MII_AUXCTRL_SPEED)
539 bp->flags |= B44_FLAG_100_BASE_T;
540 else
541 bp->flags &= ~B44_FLAG_100_BASE_T;
542 if (aux & MII_AUXCTRL_DUPLEX)
543 bp->flags |= B44_FLAG_FULL_DUPLEX;
544 else
545 bp->flags &= ~B44_FLAG_FULL_DUPLEX;
546
547 if (!netif_carrier_ok(bp->dev) &&
548 (bmsr & BMSR_LSTATUS)) {
549 u32 val = br32(bp, B44_TX_CTRL);
550 u32 local_adv, remote_adv;
551
552 if (bp->flags & B44_FLAG_FULL_DUPLEX)
553 val |= TX_CTRL_DUPLEX;
554 else
555 val &= ~TX_CTRL_DUPLEX;
556 bw32(bp, B44_TX_CTRL, val);
557
558 if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
559 !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
560 !b44_readphy(bp, MII_LPA, &remote_adv))
561 b44_set_flow_ctrl(bp, local_adv, remote_adv);
562
563 /* Link now up */
564 netif_carrier_on(bp->dev);
565 b44_link_report(bp);
566 } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
567 /* Link now down */
568 netif_carrier_off(bp->dev);
569 b44_link_report(bp);
570 }
571
572 if (bmsr & BMSR_RFAULT)
Joe Perches2fc96ff2010-02-17 15:01:50 +0000573 netdev_warn(bp->dev, "Remote fault detected in PHY\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 if (bmsr & BMSR_JCD)
Joe Perches2fc96ff2010-02-17 15:01:50 +0000575 netdev_warn(bp->dev, "Jabber detected in PHY\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 }
577}
578
579static void b44_timer(unsigned long __opaque)
580{
581 struct b44 *bp = (struct b44 *) __opaque;
582
583 spin_lock_irq(&bp->lock);
584
585 b44_check_phy(bp);
586
587 b44_stats_update(bp);
588
589 spin_unlock_irq(&bp->lock);
590
Stephen Hemmingera72a8172007-06-04 13:25:37 -0700591 mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592}
593
594static void b44_tx(struct b44 *bp)
595{
596 u32 cur, cons;
597
598 cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
599 cur /= sizeof(struct dma_desc);
600
601 /* XXX needs updating when NETIF_F_SG is supported */
602 for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
603 struct ring_info *rp = &bp->tx_buffers[cons];
604 struct sk_buff *skb = rp->skb;
605
Eric Sesterhenn5d9428d2006-04-02 13:52:48 +0200606 BUG_ON(skb == NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700608 dma_unmap_single(bp->sdev->dma_dev,
609 rp->mapping,
610 skb->len,
611 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 rp->skb = NULL;
613 dev_kfree_skb_irq(skb);
614 }
615
616 bp->tx_cons = cons;
617 if (netif_queue_stopped(bp->dev) &&
618 TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
619 netif_wake_queue(bp->dev);
620
621 bw32(bp, B44_GPTIMER, 0);
622}
623
624/* Works like this. This chip writes a 'struct rx_header" 30 bytes
625 * before the DMA address you give it. So we allocate 30 more bytes
626 * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
627 * point the chip at 30 bytes past where the rx_header will go.
628 */
629static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
630{
631 struct dma_desc *dp;
632 struct ring_info *src_map, *map;
633 struct rx_header *rh;
634 struct sk_buff *skb;
635 dma_addr_t mapping;
636 int dest_idx;
637 u32 ctrl;
638
639 src_map = NULL;
640 if (src_idx >= 0)
641 src_map = &bp->rx_buffers[src_idx];
642 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
643 map = &bp->rx_buffers[dest_idx];
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700644 skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 if (skb == NULL)
646 return -ENOMEM;
647
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700648 mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
649 RX_PKT_BUF_SZ,
650 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
652 /* Hardware bug work-around, the chip is unable to do PCI DMA
653 to/from anything above 1GB :-( */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700654 if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
Yang Hongyang28b76792009-04-06 19:01:17 -0700655 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 /* Sigh... */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700657 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
658 dma_unmap_single(bp->sdev->dma_dev, mapping,
Michael Bueschf2257632008-06-20 11:50:29 +0200659 RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 dev_kfree_skb_any(skb);
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700661 skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 if (skb == NULL)
663 return -ENOMEM;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700664 mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
665 RX_PKT_BUF_SZ,
666 DMA_FROM_DEVICE);
667 if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
668 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
669 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
670 dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 dev_kfree_skb_any(skb);
672 return -ENOMEM;
673 }
Eric Dumazeta58c8912009-01-15 15:29:35 -0800674 bp->force_copybreak = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 }
676
Stephen Hemminger72f48612007-06-04 13:25:39 -0700677 rh = (struct rx_header *) skb->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 rh->len = 0;
680 rh->flags = 0;
681
682 map->skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700683 map->mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
685 if (src_map != NULL)
686 src_map->skb = NULL;
687
Felix Fietkau4ca85792009-01-09 02:39:57 +0000688 ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 if (dest_idx == (B44_RX_RING_SIZE - 1))
690 ctrl |= DESC_CTRL_EOT;
691
692 dp = &bp->rx_ring[dest_idx];
693 dp->ctrl = cpu_to_le32(ctrl);
Felix Fietkau4ca85792009-01-09 02:39:57 +0000694 dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695
John W. Linville9f38c632005-10-18 21:30:59 -0400696 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700697 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000698 dest_idx * sizeof(*dp),
Michael Buesch753f4922007-09-19 14:20:30 -0700699 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400700
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 return RX_PKT_BUF_SZ;
702}
703
704static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
705{
706 struct dma_desc *src_desc, *dest_desc;
707 struct ring_info *src_map, *dest_map;
708 struct rx_header *rh;
709 int dest_idx;
Al Viroa7bed272007-01-29 15:36:54 -0500710 __le32 ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711
712 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
713 dest_desc = &bp->rx_ring[dest_idx];
714 dest_map = &bp->rx_buffers[dest_idx];
715 src_desc = &bp->rx_ring[src_idx];
716 src_map = &bp->rx_buffers[src_idx];
717
718 dest_map->skb = src_map->skb;
719 rh = (struct rx_header *) src_map->skb->data;
720 rh->len = 0;
721 rh->flags = 0;
Michael Buesch753f4922007-09-19 14:20:30 -0700722 dest_map->mapping = src_map->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
John W. Linville9f38c632005-10-18 21:30:59 -0400724 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700725 b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000726 src_idx * sizeof(*src_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700727 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400728
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 ctrl = src_desc->ctrl;
730 if (dest_idx == (B44_RX_RING_SIZE - 1))
731 ctrl |= cpu_to_le32(DESC_CTRL_EOT);
732 else
733 ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
734
735 dest_desc->ctrl = ctrl;
736 dest_desc->addr = src_desc->addr;
John W. Linville9f38c632005-10-18 21:30:59 -0400737
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 src_map->skb = NULL;
739
John W. Linville9f38c632005-10-18 21:30:59 -0400740 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700741 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000742 dest_idx * sizeof(*dest_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700743 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400744
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700745 dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
746 RX_PKT_BUF_SZ,
747 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748}
749
750static int b44_rx(struct b44 *bp, int budget)
751{
752 int received;
753 u32 cons, prod;
754
755 received = 0;
756 prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
757 prod /= sizeof(struct dma_desc);
758 cons = bp->rx_cons;
759
760 while (cons != prod && budget > 0) {
761 struct ring_info *rp = &bp->rx_buffers[cons];
762 struct sk_buff *skb = rp->skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700763 dma_addr_t map = rp->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 struct rx_header *rh;
765 u16 len;
766
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700767 dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
768 RX_PKT_BUF_SZ,
769 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 rh = (struct rx_header *) skb->data;
Al Viroa7bed272007-01-29 15:36:54 -0500771 len = le16_to_cpu(rh->len);
Stephen Hemminger72f48612007-06-04 13:25:39 -0700772 if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
774 drop_it:
775 b44_recycle_rx(bp, cons, bp->rx_prod);
776 drop_it_no_recycle:
Eric Dumazet553e2332009-05-27 10:34:50 +0000777 bp->dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 goto next_pkt;
779 }
780
781 if (len == 0) {
782 int i = 0;
783
784 do {
785 udelay(2);
786 barrier();
Al Viroa7bed272007-01-29 15:36:54 -0500787 len = le16_to_cpu(rh->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 } while (len == 0 && i++ < 5);
789 if (len == 0)
790 goto drop_it;
791 }
792
793 /* Omit CRC. */
794 len -= 4;
795
Eric Dumazeta58c8912009-01-15 15:29:35 -0800796 if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797 int skb_size;
798 skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
799 if (skb_size < 0)
800 goto drop_it;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700801 dma_unmap_single(bp->sdev->dma_dev, map,
802 skb_size, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 /* Leave out rx_header */
Felix Fietkau4ca85792009-01-09 02:39:57 +0000804 skb_put(skb, len + RX_PKT_OFFSET);
805 skb_pull(skb, RX_PKT_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 } else {
807 struct sk_buff *copy_skb;
808
809 b44_recycle_rx(bp, cons, bp->rx_prod);
Hauke Mehrtens53639202010-02-20 10:55:26 +0000810 copy_skb = netdev_alloc_skb(bp->dev, len + 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 if (copy_skb == NULL)
812 goto drop_it_no_recycle;
813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 skb_reserve(copy_skb, 2);
815 skb_put(copy_skb, len);
816 /* DMA sync done above, copy just the actual packet */
Stephen Hemminger72f48612007-06-04 13:25:39 -0700817 skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300818 copy_skb->data, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 skb = copy_skb;
820 }
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700821 skb_checksum_none_assert(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 skb->protocol = eth_type_trans(skb, bp->dev);
823 netif_receive_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 received++;
825 budget--;
826 next_pkt:
827 bp->rx_prod = (bp->rx_prod + 1) &
828 (B44_RX_RING_SIZE - 1);
829 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
830 }
831
832 bp->rx_cons = cons;
833 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
834
835 return received;
836}
837
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700838static int b44_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700840 struct b44 *bp = container_of(napi, struct b44, napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700841 int work_done;
Dongdong Denge99b1f02009-09-16 16:10:47 +0000842 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843
Dongdong Denge99b1f02009-09-16 16:10:47 +0000844 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845
846 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
847 /* spin_lock(&bp->tx_lock); */
848 b44_tx(bp);
849 /* spin_unlock(&bp->tx_lock); */
850 }
Mark Lord32737e92010-09-04 14:17:59 +0000851 if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */
852 bp->istat &= ~ISTAT_RFO;
853 b44_disable_ints(bp);
854 ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */
855 b44_init_rings(bp);
856 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
857 netif_wake_queue(bp->dev);
858 }
859
Dongdong Denge99b1f02009-09-16 16:10:47 +0000860 spin_unlock_irqrestore(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700862 work_done = 0;
863 if (bp->istat & ISTAT_RX)
864 work_done += b44_rx(bp, budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
866 if (bp->istat & ISTAT_ERRORS) {
Francois Romieud15e9c42006-12-17 23:03:15 +0100867 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 b44_halt(bp);
869 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800870 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 netif_wake_queue(bp->dev);
Francois Romieud15e9c42006-12-17 23:03:15 +0100872 spin_unlock_irqrestore(&bp->lock, flags);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700873 work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 }
875
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700876 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -0800877 napi_complete(napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878 b44_enable_ints(bp);
879 }
880
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700881 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882}
883
David Howells7d12e782006-10-05 14:55:46 +0100884static irqreturn_t b44_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885{
886 struct net_device *dev = dev_id;
887 struct b44 *bp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 u32 istat, imask;
889 int handled = 0;
890
Francois Romieu65b984f2005-11-07 01:52:06 +0100891 spin_lock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
893 istat = br32(bp, B44_ISTAT);
894 imask = br32(bp, B44_IMASK);
895
Johannes Berge78181f2006-11-06 23:17:20 +0100896 /* The interrupt mask register controls which interrupt bits
897 * will actually raise an interrupt to the CPU when set by hw/firmware,
898 * but doesn't mask off the bits.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 */
900 istat &= imask;
901 if (istat) {
902 handled = 1;
Francois Romieuba5eec92005-11-08 23:37:12 +0100903
904 if (unlikely(!netif_running(dev))) {
Joe Perches2fc96ff2010-02-17 15:01:50 +0000905 netdev_info(dev, "late interrupt\n");
Francois Romieuba5eec92005-11-08 23:37:12 +0100906 goto irq_ack;
907 }
908
Ben Hutchings288379f2009-01-19 16:43:59 -0800909 if (napi_schedule_prep(&bp->napi)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 /* NOTE: These writes are posted by the readback of
911 * the ISTAT register below.
912 */
913 bp->istat = istat;
914 __b44_disable_ints(bp);
Ben Hutchings288379f2009-01-19 16:43:59 -0800915 __napi_schedule(&bp->napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 }
917
Francois Romieuba5eec92005-11-08 23:37:12 +0100918irq_ack:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 bw32(bp, B44_ISTAT, istat);
920 br32(bp, B44_ISTAT);
921 }
Francois Romieu65b984f2005-11-07 01:52:06 +0100922 spin_unlock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 return IRQ_RETVAL(handled);
924}
925
926static void b44_tx_timeout(struct net_device *dev)
927{
928 struct b44 *bp = netdev_priv(dev);
929
Joe Perches2fc96ff2010-02-17 15:01:50 +0000930 netdev_err(dev, "transmit timed out, resetting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
932 spin_lock_irq(&bp->lock);
933
934 b44_halt(bp);
935 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800936 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
938 spin_unlock_irq(&bp->lock);
939
940 b44_enable_ints(bp);
941
942 netif_wake_queue(dev);
943}
944
Stephen Hemminger613573252009-08-31 19:50:58 +0000945static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946{
947 struct b44 *bp = netdev_priv(dev);
Francois Romieuc7193692005-11-07 01:50:03 +0100948 int rc = NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 dma_addr_t mapping;
950 u32 len, entry, ctrl;
Dongdong Deng22580f82009-08-13 19:12:31 +0000951 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952
953 len = skb->len;
Dongdong Deng22580f82009-08-13 19:12:31 +0000954 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
956 /* This is a hard error, log it. */
957 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
958 netif_stop_queue(dev);
Joe Perches2fc96ff2010-02-17 15:01:50 +0000959 netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
Francois Romieuc7193692005-11-07 01:50:03 +0100960 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 }
962
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700963 mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
964 if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700965 struct sk_buff *bounce_skb;
966
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700968 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
969 dma_unmap_single(bp->sdev->dma_dev, mapping, len,
Michael Bueschf2257632008-06-20 11:50:29 +0200970 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971
David S. Miller9034f772009-02-10 01:56:45 -0800972 bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 if (!bounce_skb)
Francois Romieuc7193692005-11-07 01:50:03 +0100974 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -0700976 mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
977 len, DMA_TO_DEVICE);
978 if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
979 if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
980 dma_unmap_single(bp->sdev->dma_dev, mapping,
Michael Bueschf2257632008-06-20 11:50:29 +0200981 len, DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 dev_kfree_skb_any(bounce_skb);
Francois Romieuc7193692005-11-07 01:50:03 +0100983 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984 }
985
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700986 skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 dev_kfree_skb_any(skb);
988 skb = bounce_skb;
989 }
990
991 entry = bp->tx_prod;
992 bp->tx_buffers[entry].skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700993 bp->tx_buffers[entry].mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994
995 ctrl = (len & DESC_CTRL_LEN);
996 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
997 if (entry == (B44_TX_RING_SIZE - 1))
998 ctrl |= DESC_CTRL_EOT;
999
1000 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
1001 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
1002
John W. Linville9f38c632005-10-18 21:30:59 -04001003 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001004 b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
1005 entry * sizeof(bp->tx_ring[0]),
1006 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001007
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 entry = NEXT_TX(entry);
1009
1010 bp->tx_prod = entry;
1011
1012 wmb();
1013
1014 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1015 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
1016 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1017 if (bp->flags & B44_FLAG_REORDER_BUG)
1018 br32(bp, B44_DMATX_PTR);
1019
1020 if (TX_BUFFS_AVAIL(bp) < 1)
1021 netif_stop_queue(dev);
1022
Francois Romieuc7193692005-11-07 01:50:03 +01001023out_unlock:
Dongdong Deng22580f82009-08-13 19:12:31 +00001024 spin_unlock_irqrestore(&bp->lock, flags);
Francois Romieuc7193692005-11-07 01:50:03 +01001025
1026 return rc;
1027
1028err_out:
1029 rc = NETDEV_TX_BUSY;
1030 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031}
1032
1033static int b44_change_mtu(struct net_device *dev, int new_mtu)
1034{
1035 struct b44 *bp = netdev_priv(dev);
1036
1037 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
1038 return -EINVAL;
1039
1040 if (!netif_running(dev)) {
1041 /* We'll just catch it later when the
1042 * device is up'd.
1043 */
1044 dev->mtu = new_mtu;
1045 return 0;
1046 }
1047
1048 spin_lock_irq(&bp->lock);
1049 b44_halt(bp);
1050 dev->mtu = new_mtu;
1051 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001052 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 spin_unlock_irq(&bp->lock);
1054
1055 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001056
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 return 0;
1058}
1059
1060/* Free up pending packets in all rx/tx rings.
1061 *
1062 * The chip has been shut down and the driver detached from
1063 * the networking, so no interrupts or new tx packets will
1064 * end up in the driver. bp->lock is not held and we are not
1065 * in an interrupt context and thus may sleep.
1066 */
1067static void b44_free_rings(struct b44 *bp)
1068{
1069 struct ring_info *rp;
1070 int i;
1071
1072 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1073 rp = &bp->rx_buffers[i];
1074
1075 if (rp->skb == NULL)
1076 continue;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001077 dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
1078 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 dev_kfree_skb_any(rp->skb);
1080 rp->skb = NULL;
1081 }
1082
1083 /* XXX needs changes once NETIF_F_SG is set... */
1084 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1085 rp = &bp->tx_buffers[i];
1086
1087 if (rp->skb == NULL)
1088 continue;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001089 dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
1090 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 dev_kfree_skb_any(rp->skb);
1092 rp->skb = NULL;
1093 }
1094}
1095
1096/* Initialize tx/rx rings for packet processing.
1097 *
1098 * The chip has been shut down and the driver detached from
1099 * the networking, so no interrupts or new tx packets will
Francois Romieu874a6212005-11-07 01:50:46 +01001100 * end up in the driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 */
1102static void b44_init_rings(struct b44 *bp)
1103{
1104 int i;
1105
1106 b44_free_rings(bp);
1107
1108 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1109 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1110
John W. Linville9f38c632005-10-18 21:30:59 -04001111 if (bp->flags & B44_FLAG_RX_RING_HACK)
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001112 dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
1113 DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001114
1115 if (bp->flags & B44_FLAG_TX_RING_HACK)
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001116 dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
1117 DMA_TABLE_BYTES, DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001118
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 for (i = 0; i < bp->rx_pending; i++) {
1120 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1121 break;
1122 }
1123}
1124
1125/*
1126 * Must not be invoked with interrupt sources disabled and
1127 * the hardware shutdown down.
1128 */
1129static void b44_free_consistent(struct b44 *bp)
1130{
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001131 kfree(bp->rx_buffers);
1132 bp->rx_buffers = NULL;
1133 kfree(bp->tx_buffers);
1134 bp->tx_buffers = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 if (bp->rx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001136 if (bp->flags & B44_FLAG_RX_RING_HACK) {
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001137 dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
1138 DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001139 kfree(bp->rx_ring);
1140 } else
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001141 dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
1142 bp->rx_ring, bp->rx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 bp->rx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001144 bp->flags &= ~B44_FLAG_RX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145 }
1146 if (bp->tx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001147 if (bp->flags & B44_FLAG_TX_RING_HACK) {
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001148 dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
1149 DMA_TABLE_BYTES, DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001150 kfree(bp->tx_ring);
1151 } else
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001152 dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
1153 bp->tx_ring, bp->tx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 bp->tx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001155 bp->flags &= ~B44_FLAG_TX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156 }
1157}
1158
1159/*
1160 * Must not be invoked with interrupt sources disabled and
1161 * the hardware shutdown down. Can sleep.
1162 */
Michael Buesch753f4922007-09-19 14:20:30 -07001163static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164{
1165 int size;
1166
1167 size = B44_RX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001168 bp->rx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169 if (!bp->rx_buffers)
1170 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171
1172 size = B44_TX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001173 bp->tx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 if (!bp->tx_buffers)
1175 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
1177 size = DMA_TABLE_BYTES;
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001178 bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
1179 &bp->rx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001180 if (!bp->rx_ring) {
1181 /* Allocation may have failed due to pci_alloc_consistent
1182 insisting on use of GFP_DMA, which is more restrictive
1183 than necessary... */
1184 struct dma_desc *rx_ring;
1185 dma_addr_t rx_ring_dma;
1186
Michael Buesch753f4922007-09-19 14:20:30 -07001187 rx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001188 if (!rx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001189 goto out_err;
1190
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001191 rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
1192 DMA_TABLE_BYTES,
1193 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001194
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001195 if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001196 rx_ring_dma + size > DMA_BIT_MASK(30)) {
John W. Linville9f38c632005-10-18 21:30:59 -04001197 kfree(rx_ring);
1198 goto out_err;
1199 }
1200
1201 bp->rx_ring = rx_ring;
1202 bp->rx_ring_dma = rx_ring_dma;
1203 bp->flags |= B44_FLAG_RX_RING_HACK;
1204 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001206 bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
1207 &bp->tx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001208 if (!bp->tx_ring) {
Michael Bueschf2257632008-06-20 11:50:29 +02001209 /* Allocation may have failed due to ssb_dma_alloc_consistent
John W. Linville9f38c632005-10-18 21:30:59 -04001210 insisting on use of GFP_DMA, which is more restrictive
1211 than necessary... */
1212 struct dma_desc *tx_ring;
1213 dma_addr_t tx_ring_dma;
1214
Michael Buesch753f4922007-09-19 14:20:30 -07001215 tx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001216 if (!tx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001217 goto out_err;
1218
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001219 tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
1220 DMA_TABLE_BYTES,
1221 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001222
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07001223 if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001224 tx_ring_dma + size > DMA_BIT_MASK(30)) {
John W. Linville9f38c632005-10-18 21:30:59 -04001225 kfree(tx_ring);
1226 goto out_err;
1227 }
1228
1229 bp->tx_ring = tx_ring;
1230 bp->tx_ring_dma = tx_ring_dma;
1231 bp->flags |= B44_FLAG_TX_RING_HACK;
1232 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233
1234 return 0;
1235
1236out_err:
1237 b44_free_consistent(bp);
1238 return -ENOMEM;
1239}
1240
1241/* bp->lock is held. */
1242static void b44_clear_stats(struct b44 *bp)
1243{
1244 unsigned long reg;
1245
1246 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1247 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
1248 br32(bp, reg);
1249 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
1250 br32(bp, reg);
1251}
1252
1253/* bp->lock is held. */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001254static void b44_chip_reset(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255{
Michael Buesch753f4922007-09-19 14:20:30 -07001256 struct ssb_device *sdev = bp->sdev;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001257 bool was_enabled;
Michael Buesch753f4922007-09-19 14:20:30 -07001258
Michael Bueschf8af11a2009-02-26 22:33:00 -08001259 was_enabled = ssb_device_is_enabled(bp->sdev);
1260
1261 ssb_device_enable(bp->sdev, 0);
1262 ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
1263
1264 if (was_enabled) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 bw32(bp, B44_RCV_LAZY, 0);
1266 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
Gary Zambrano40ee8c72007-02-16 13:27:27 -08001267 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 bw32(bp, B44_DMATX_CTRL, 0);
1269 bp->tx_prod = bp->tx_cons = 0;
1270 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1271 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1272 100, 0);
1273 }
1274 bw32(bp, B44_DMARX_CTRL, 0);
1275 bp->rx_prod = bp->rx_cons = 0;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001276 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 b44_clear_stats(bp);
1279
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001280 /*
1281 * Don't enable PHY if we are doing a partial reset
1282 * we are probably going to power down
1283 */
1284 if (reset_kind == B44_CHIP_RESET_PARTIAL)
1285 return;
1286
Michael Buesch753f4922007-09-19 14:20:30 -07001287 switch (sdev->bus->bustype) {
1288 case SSB_BUSTYPE_SSB:
1289 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
Julia Lawall39506a52009-08-01 09:51:06 +00001290 (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus),
1291 B44_MDC_RATIO)
Michael Buesch753f4922007-09-19 14:20:30 -07001292 & MDIO_CTRL_MAXF_MASK)));
1293 break;
1294 case SSB_BUSTYPE_PCI:
Michael Buesch753f4922007-09-19 14:20:30 -07001295 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1296 (0x0d & MDIO_CTRL_MAXF_MASK)));
1297 break;
Michael Buesch98a1e2a2009-09-08 19:33:31 +02001298 case SSB_BUSTYPE_PCMCIA:
1299 case SSB_BUSTYPE_SDIO:
1300 WARN_ON(1); /* A device with this bus does not exist. */
1301 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001302 }
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304 br32(bp, B44_MDIO_CTRL);
1305
1306 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1307 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1308 br32(bp, B44_ENET_CTRL);
1309 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1310 } else {
1311 u32 val = br32(bp, B44_DEVCTRL);
1312
1313 if (val & DEVCTRL_EPR) {
1314 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1315 br32(bp, B44_DEVCTRL);
1316 udelay(100);
1317 }
1318 bp->flags |= B44_FLAG_INTERNAL_PHY;
1319 }
1320}
1321
1322/* bp->lock is held. */
1323static void b44_halt(struct b44 *bp)
1324{
1325 b44_disable_ints(bp);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001326 /* reset PHY */
1327 b44_phy_reset(bp);
1328 /* power down PHY */
Joe Perches2fc96ff2010-02-17 15:01:50 +00001329 netdev_info(bp->dev, "powering down PHY\n");
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001330 bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
1331 /* now reset the chip, but without enabling the MAC&PHY
1332 * part of it. This has to be done _after_ we shut down the PHY */
1333 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334}
1335
1336/* bp->lock is held. */
1337static void __b44_set_mac_addr(struct b44 *bp)
1338{
1339 bw32(bp, B44_CAM_CTRL, 0);
1340 if (!(bp->dev->flags & IFF_PROMISC)) {
1341 u32 val;
1342
1343 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1344 val = br32(bp, B44_CAM_CTRL);
1345 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1346 }
1347}
1348
1349static int b44_set_mac_addr(struct net_device *dev, void *p)
1350{
1351 struct b44 *bp = netdev_priv(dev);
1352 struct sockaddr *addr = p;
Michael Buesch753f4922007-09-19 14:20:30 -07001353 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354
1355 if (netif_running(dev))
1356 return -EBUSY;
1357
Gary Zambrano391fc092006-03-28 14:57:38 -08001358 if (!is_valid_ether_addr(addr->sa_data))
1359 return -EINVAL;
1360
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1362
1363 spin_lock_irq(&bp->lock);
Michael Buesch753f4922007-09-19 14:20:30 -07001364
1365 val = br32(bp, B44_RXCONFIG);
1366 if (!(val & RXCONFIG_CAM_ABSENT))
1367 __b44_set_mac_addr(bp);
1368
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369 spin_unlock_irq(&bp->lock);
1370
1371 return 0;
1372}
1373
1374/* Called at device open time to get the chip ready for
1375 * packet processing. Invoked with bp->lock held.
1376 */
1377static void __b44_set_rx_mode(struct net_device *);
Michael Chan5fc7d612007-01-26 23:59:57 -08001378static void b44_init_hw(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001379{
1380 u32 val;
1381
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001382 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Michael Chan5fc7d612007-01-26 23:59:57 -08001383 if (reset_kind == B44_FULL_RESET) {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001384 b44_phy_reset(bp);
1385 b44_setup_phy(bp);
1386 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387
1388 /* Enable CRC32, set proper LED modes and power on PHY */
1389 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1390 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1391
1392 /* This sets the MAC address too. */
1393 __b44_set_rx_mode(bp->dev);
1394
1395 /* MTU + eth header + possible VLAN tag + struct rx_header */
1396 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1397 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1398
1399 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
Michael Chan5fc7d612007-01-26 23:59:57 -08001400 if (reset_kind == B44_PARTIAL_RESET) {
1401 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001402 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Michael Chan5fc7d612007-01-26 23:59:57 -08001403 } else {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001404 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1405 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1406 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001407 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001408 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001410 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1411 bp->rx_prod = bp->rx_pending;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001413 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001414 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415
1416 val = br32(bp, B44_ENET_CTRL);
1417 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1418}
1419
1420static int b44_open(struct net_device *dev)
1421{
1422 struct b44 *bp = netdev_priv(dev);
1423 int err;
1424
Michael Buesch753f4922007-09-19 14:20:30 -07001425 err = b44_alloc_consistent(bp, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 if (err)
Francois Romieu6c2f4262005-11-07 01:52:57 +01001427 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001429 napi_enable(&bp->napi);
1430
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001432 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433
John W. Linvillee254e9b2005-06-08 15:11:57 -04001434 b44_check_phy(bp);
1435
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001436 err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001437 if (unlikely(err < 0)) {
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001438 napi_disable(&bp->napi);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001439 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001440 b44_free_rings(bp);
1441 b44_free_consistent(bp);
1442 goto out;
1443 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444
1445 init_timer(&bp->timer);
1446 bp->timer.expires = jiffies + HZ;
1447 bp->timer.data = (unsigned long) bp;
1448 bp->timer.function = b44_timer;
1449 add_timer(&bp->timer);
1450
1451 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01001452 netif_start_queue(dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001453out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 return err;
1455}
1456
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457#ifdef CONFIG_NET_POLL_CONTROLLER
1458/*
1459 * Polling receive - used by netconsole and other diagnostic tools
1460 * to allow network i/o with interrupts disabled.
1461 */
1462static void b44_poll_controller(struct net_device *dev)
1463{
1464 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +01001465 b44_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 enable_irq(dev->irq);
1467}
1468#endif
1469
Gary Zambrano725ad802006-06-20 15:34:36 -07001470static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
1471{
1472 u32 i;
1473 u32 *pattern = (u32 *) pp;
1474
1475 for (i = 0; i < bytes; i += sizeof(u32)) {
1476 bw32(bp, B44_FILT_ADDR, table_offset + i);
1477 bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
1478 }
1479}
1480
1481static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
1482{
1483 int magicsync = 6;
1484 int k, j, len = offset;
1485 int ethaddr_bytes = ETH_ALEN;
1486
1487 memset(ppattern + offset, 0xff, magicsync);
1488 for (j = 0; j < magicsync; j++)
1489 set_bit(len++, (unsigned long *) pmask);
1490
1491 for (j = 0; j < B44_MAX_PATTERNS; j++) {
1492 if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
1493 ethaddr_bytes = ETH_ALEN;
1494 else
1495 ethaddr_bytes = B44_PATTERN_SIZE - len;
1496 if (ethaddr_bytes <=0)
1497 break;
1498 for (k = 0; k< ethaddr_bytes; k++) {
1499 ppattern[offset + magicsync +
1500 (j * ETH_ALEN) + k] = macaddr[k];
Stanislav Brabece0188822009-12-08 21:00:22 -08001501 set_bit(len++, (unsigned long *) pmask);
Gary Zambrano725ad802006-06-20 15:34:36 -07001502 }
1503 }
1504 return len - 1;
1505}
1506
1507/* Setup magic packet patterns in the b44 WOL
1508 * pattern matching filter.
1509 */
1510static void b44_setup_pseudo_magicp(struct b44 *bp)
1511{
1512
1513 u32 val;
1514 int plen0, plen1, plen2;
1515 u8 *pwol_pattern;
1516 u8 pwol_mask[B44_PMASK_SIZE];
1517
Yoann Padioleaudd00cc42007-07-19 01:49:03 -07001518 pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
Gary Zambrano725ad802006-06-20 15:34:36 -07001519 if (!pwol_pattern) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00001520 pr_err("Memory not available for WOL\n");
Gary Zambrano725ad802006-06-20 15:34:36 -07001521 return;
1522 }
1523
1524 /* Ipv4 magic packet pattern - pattern 0.*/
Gary Zambrano725ad802006-06-20 15:34:36 -07001525 memset(pwol_mask, 0, B44_PMASK_SIZE);
1526 plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1527 B44_ETHIPV4UDP_HLEN);
1528
1529 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
1530 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
1531
1532 /* Raw ethernet II magic packet pattern - pattern 1 */
1533 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1534 memset(pwol_mask, 0, B44_PMASK_SIZE);
1535 plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1536 ETH_HLEN);
1537
1538 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1539 B44_PATTERN_BASE + B44_PATTERN_SIZE);
1540 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1541 B44_PMASK_BASE + B44_PMASK_SIZE);
1542
1543 /* Ipv6 magic packet pattern - pattern 2 */
1544 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1545 memset(pwol_mask, 0, B44_PMASK_SIZE);
1546 plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1547 B44_ETHIPV6UDP_HLEN);
1548
1549 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1550 B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
1551 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1552 B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
1553
1554 kfree(pwol_pattern);
1555
1556 /* set these pattern's lengths: one less than each real length */
1557 val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
1558 bw32(bp, B44_WKUP_LEN, val);
1559
1560 /* enable wakeup pattern matching */
1561 val = br32(bp, B44_DEVCTRL);
1562 bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
1563
1564}
Gary Zambrano52cafd92006-06-20 15:34:23 -07001565
Michael Buesch753f4922007-09-19 14:20:30 -07001566#ifdef CONFIG_B44_PCI
1567static void b44_setup_wol_pci(struct b44 *bp)
1568{
1569 u16 val;
1570
1571 if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
1572 bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
1573 pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
1574 pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
1575 }
1576}
1577#else
1578static inline void b44_setup_wol_pci(struct b44 *bp) { }
1579#endif /* CONFIG_B44_PCI */
1580
Gary Zambrano52cafd92006-06-20 15:34:23 -07001581static void b44_setup_wol(struct b44 *bp)
1582{
1583 u32 val;
Gary Zambrano52cafd92006-06-20 15:34:23 -07001584
1585 bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
1586
1587 if (bp->flags & B44_FLAG_B0_ANDLATER) {
1588
1589 bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
1590
1591 val = bp->dev->dev_addr[2] << 24 |
1592 bp->dev->dev_addr[3] << 16 |
1593 bp->dev->dev_addr[4] << 8 |
1594 bp->dev->dev_addr[5];
1595 bw32(bp, B44_ADDR_LO, val);
1596
1597 val = bp->dev->dev_addr[0] << 8 |
1598 bp->dev->dev_addr[1];
1599 bw32(bp, B44_ADDR_HI, val);
1600
1601 val = br32(bp, B44_DEVCTRL);
1602 bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
1603
Gary Zambrano725ad802006-06-20 15:34:36 -07001604 } else {
1605 b44_setup_pseudo_magicp(bp);
1606 }
Michael Buesch753f4922007-09-19 14:20:30 -07001607 b44_setup_wol_pci(bp);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001608}
1609
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610static int b44_close(struct net_device *dev)
1611{
1612 struct b44 *bp = netdev_priv(dev);
1613
1614 netif_stop_queue(dev);
1615
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001616 napi_disable(&bp->napi);
Francois Romieuba5eec92005-11-08 23:37:12 +01001617
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618 del_timer_sync(&bp->timer);
1619
1620 spin_lock_irq(&bp->lock);
1621
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622 b44_halt(bp);
1623 b44_free_rings(bp);
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08001624 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625
1626 spin_unlock_irq(&bp->lock);
1627
1628 free_irq(dev->irq, dev);
1629
Gary Zambrano52cafd92006-06-20 15:34:23 -07001630 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08001631 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001632 b44_setup_wol(bp);
1633 }
1634
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635 b44_free_consistent(bp);
1636
1637 return 0;
1638}
1639
1640static struct net_device_stats *b44_get_stats(struct net_device *dev)
1641{
1642 struct b44 *bp = netdev_priv(dev);
Eric Dumazet553e2332009-05-27 10:34:50 +00001643 struct net_device_stats *nstat = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644 struct b44_hw_stats *hwstat = &bp->hw_stats;
1645
1646 /* Convert HW stats into netdevice stats. */
1647 nstat->rx_packets = hwstat->rx_pkts;
1648 nstat->tx_packets = hwstat->tx_pkts;
1649 nstat->rx_bytes = hwstat->rx_octets;
1650 nstat->tx_bytes = hwstat->tx_octets;
1651 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1652 hwstat->tx_oversize_pkts +
1653 hwstat->tx_underruns +
1654 hwstat->tx_excessive_cols +
1655 hwstat->tx_late_cols);
1656 nstat->multicast = hwstat->tx_multicast_pkts;
1657 nstat->collisions = hwstat->tx_total_cols;
1658
1659 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1660 hwstat->rx_undersize);
1661 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1662 nstat->rx_frame_errors = hwstat->rx_align_errs;
1663 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1664 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1665 hwstat->rx_oversize_pkts +
1666 hwstat->rx_missed_pkts +
1667 hwstat->rx_crc_align_errs +
1668 hwstat->rx_undersize +
1669 hwstat->rx_crc_errs +
1670 hwstat->rx_align_errs +
1671 hwstat->rx_symbol_errs);
1672
1673 nstat->tx_aborted_errors = hwstat->tx_underruns;
1674#if 0
1675 /* Carrier lost counter seems to be broken for some devices */
1676 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1677#endif
1678
1679 return nstat;
1680}
1681
1682static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1683{
Jiri Pirko22bedad32010-04-01 21:22:57 +00001684 struct netdev_hw_addr *ha;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685 int i, num_ents;
1686
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001687 num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE);
Jiri Pirko0ddf4772010-02-20 00:13:58 +00001688 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001689 netdev_for_each_mc_addr(ha, dev) {
Jiri Pirko0ddf4772010-02-20 00:13:58 +00001690 if (i == num_ents)
1691 break;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001692 __b44_cam_write(bp, ha->addr, i++ + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693 }
1694 return i+1;
1695}
1696
1697static void __b44_set_rx_mode(struct net_device *dev)
1698{
1699 struct b44 *bp = netdev_priv(dev);
1700 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701
1702 val = br32(bp, B44_RXCONFIG);
1703 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
Michael Buesch753f4922007-09-19 14:20:30 -07001704 if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705 val |= RXCONFIG_PROMISC;
1706 bw32(bp, B44_RXCONFIG, val);
1707 } else {
Francois Romieu874a6212005-11-07 01:50:46 +01001708 unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
Bill Helfinstinecda22aa2007-04-01 13:10:28 -04001709 int i = 1;
Francois Romieu874a6212005-11-07 01:50:46 +01001710
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711 __b44_set_mac_addr(bp);
1712
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001713 if ((dev->flags & IFF_ALLMULTI) ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001714 (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715 val |= RXCONFIG_ALLMULTI;
1716 else
Francois Romieu874a6212005-11-07 01:50:46 +01001717 i = __b44_load_mcast(bp, dev);
Jeff Garzik10badc22006-04-12 18:04:32 -04001718
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001719 for (; i < 64; i++)
Jeff Garzik10badc22006-04-12 18:04:32 -04001720 __b44_cam_write(bp, zero, i);
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001721
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722 bw32(bp, B44_RXCONFIG, val);
1723 val = br32(bp, B44_CAM_CTRL);
1724 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1725 }
1726}
1727
1728static void b44_set_rx_mode(struct net_device *dev)
1729{
1730 struct b44 *bp = netdev_priv(dev);
1731
1732 spin_lock_irq(&bp->lock);
1733 __b44_set_rx_mode(dev);
1734 spin_unlock_irq(&bp->lock);
1735}
1736
1737static u32 b44_get_msglevel(struct net_device *dev)
1738{
1739 struct b44 *bp = netdev_priv(dev);
1740 return bp->msg_enable;
1741}
1742
1743static void b44_set_msglevel(struct net_device *dev, u32 value)
1744{
1745 struct b44 *bp = netdev_priv(dev);
1746 bp->msg_enable = value;
1747}
1748
1749static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1750{
1751 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07001752 struct ssb_bus *bus = bp->sdev->bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753
roel kluin27e09552009-07-17 08:01:54 +00001754 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
1755 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
Michael Buesch753f4922007-09-19 14:20:30 -07001756 switch (bus->bustype) {
1757 case SSB_BUSTYPE_PCI:
roel kluin27e09552009-07-17 08:01:54 +00001758 strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
Michael Buesch753f4922007-09-19 14:20:30 -07001759 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001760 case SSB_BUSTYPE_SSB:
roel kluin27e09552009-07-17 08:01:54 +00001761 strlcpy(info->bus_info, "SSB", sizeof(info->bus_info));
Michael Buesch753f4922007-09-19 14:20:30 -07001762 break;
Michael Buesch98a1e2a2009-09-08 19:33:31 +02001763 case SSB_BUSTYPE_PCMCIA:
1764 case SSB_BUSTYPE_SDIO:
1765 WARN_ON(1); /* A device with this bus does not exist. */
1766 break;
Michael Buesch753f4922007-09-19 14:20:30 -07001767 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768}
1769
1770static int b44_nway_reset(struct net_device *dev)
1771{
1772 struct b44 *bp = netdev_priv(dev);
1773 u32 bmcr;
1774 int r;
1775
1776 spin_lock_irq(&bp->lock);
1777 b44_readphy(bp, MII_BMCR, &bmcr);
1778 b44_readphy(bp, MII_BMCR, &bmcr);
1779 r = -EINVAL;
1780 if (bmcr & BMCR_ANENABLE) {
1781 b44_writephy(bp, MII_BMCR,
1782 bmcr | BMCR_ANRESTART);
1783 r = 0;
1784 }
1785 spin_unlock_irq(&bp->lock);
1786
1787 return r;
1788}
1789
1790static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1791{
1792 struct b44 *bp = netdev_priv(dev);
1793
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794 cmd->supported = (SUPPORTED_Autoneg);
1795 cmd->supported |= (SUPPORTED_100baseT_Half |
1796 SUPPORTED_100baseT_Full |
1797 SUPPORTED_10baseT_Half |
1798 SUPPORTED_10baseT_Full |
1799 SUPPORTED_MII);
1800
1801 cmd->advertising = 0;
1802 if (bp->flags & B44_FLAG_ADV_10HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001803 cmd->advertising |= ADVERTISED_10baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 if (bp->flags & B44_FLAG_ADV_10FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001805 cmd->advertising |= ADVERTISED_10baseT_Full;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 if (bp->flags & B44_FLAG_ADV_100HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001807 cmd->advertising |= ADVERTISED_100baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 if (bp->flags & B44_FLAG_ADV_100FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001809 cmd->advertising |= ADVERTISED_100baseT_Full;
1810 cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811 cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ?
1812 SPEED_100 : SPEED_10;
1813 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1814 DUPLEX_FULL : DUPLEX_HALF;
1815 cmd->port = 0;
1816 cmd->phy_address = bp->phy_addr;
1817 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1818 XCVR_INTERNAL : XCVR_EXTERNAL;
1819 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1820 AUTONEG_DISABLE : AUTONEG_ENABLE;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001821 if (cmd->autoneg == AUTONEG_ENABLE)
1822 cmd->advertising |= ADVERTISED_Autoneg;
1823 if (!netif_running(dev)){
1824 cmd->speed = 0;
1825 cmd->duplex = 0xff;
1826 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 cmd->maxtxpkt = 0;
1828 cmd->maxrxpkt = 0;
1829 return 0;
1830}
1831
1832static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1833{
1834 struct b44 *bp = netdev_priv(dev);
1835
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836 /* We do not support gigabit. */
1837 if (cmd->autoneg == AUTONEG_ENABLE) {
1838 if (cmd->advertising &
1839 (ADVERTISED_1000baseT_Half |
1840 ADVERTISED_1000baseT_Full))
1841 return -EINVAL;
1842 } else if ((cmd->speed != SPEED_100 &&
1843 cmd->speed != SPEED_10) ||
1844 (cmd->duplex != DUPLEX_HALF &&
1845 cmd->duplex != DUPLEX_FULL)) {
1846 return -EINVAL;
1847 }
1848
1849 spin_lock_irq(&bp->lock);
1850
1851 if (cmd->autoneg == AUTONEG_ENABLE) {
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001852 bp->flags &= ~(B44_FLAG_FORCE_LINK |
1853 B44_FLAG_100_BASE_T |
1854 B44_FLAG_FULL_DUPLEX |
1855 B44_FLAG_ADV_10HALF |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001856 B44_FLAG_ADV_10FULL |
1857 B44_FLAG_ADV_100HALF |
1858 B44_FLAG_ADV_100FULL);
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001859 if (cmd->advertising == 0) {
1860 bp->flags |= (B44_FLAG_ADV_10HALF |
1861 B44_FLAG_ADV_10FULL |
1862 B44_FLAG_ADV_100HALF |
1863 B44_FLAG_ADV_100FULL);
1864 } else {
1865 if (cmd->advertising & ADVERTISED_10baseT_Half)
1866 bp->flags |= B44_FLAG_ADV_10HALF;
1867 if (cmd->advertising & ADVERTISED_10baseT_Full)
1868 bp->flags |= B44_FLAG_ADV_10FULL;
1869 if (cmd->advertising & ADVERTISED_100baseT_Half)
1870 bp->flags |= B44_FLAG_ADV_100HALF;
1871 if (cmd->advertising & ADVERTISED_100baseT_Full)
1872 bp->flags |= B44_FLAG_ADV_100FULL;
1873 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874 } else {
1875 bp->flags |= B44_FLAG_FORCE_LINK;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001876 bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 if (cmd->speed == SPEED_100)
1878 bp->flags |= B44_FLAG_100_BASE_T;
1879 if (cmd->duplex == DUPLEX_FULL)
1880 bp->flags |= B44_FLAG_FULL_DUPLEX;
1881 }
1882
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001883 if (netif_running(dev))
1884 b44_setup_phy(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885
1886 spin_unlock_irq(&bp->lock);
1887
1888 return 0;
1889}
1890
1891static void b44_get_ringparam(struct net_device *dev,
1892 struct ethtool_ringparam *ering)
1893{
1894 struct b44 *bp = netdev_priv(dev);
1895
1896 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1897 ering->rx_pending = bp->rx_pending;
1898
1899 /* XXX ethtool lacks a tx_max_pending, oops... */
1900}
1901
1902static int b44_set_ringparam(struct net_device *dev,
1903 struct ethtool_ringparam *ering)
1904{
1905 struct b44 *bp = netdev_priv(dev);
1906
1907 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1908 (ering->rx_mini_pending != 0) ||
1909 (ering->rx_jumbo_pending != 0) ||
1910 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1911 return -EINVAL;
1912
1913 spin_lock_irq(&bp->lock);
1914
1915 bp->rx_pending = ering->rx_pending;
1916 bp->tx_pending = ering->tx_pending;
1917
1918 b44_halt(bp);
1919 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001920 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001921 netif_wake_queue(bp->dev);
1922 spin_unlock_irq(&bp->lock);
1923
1924 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001925
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926 return 0;
1927}
1928
1929static void b44_get_pauseparam(struct net_device *dev,
1930 struct ethtool_pauseparam *epause)
1931{
1932 struct b44 *bp = netdev_priv(dev);
1933
1934 epause->autoneg =
1935 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1936 epause->rx_pause =
1937 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1938 epause->tx_pause =
1939 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1940}
1941
1942static int b44_set_pauseparam(struct net_device *dev,
1943 struct ethtool_pauseparam *epause)
1944{
1945 struct b44 *bp = netdev_priv(dev);
1946
1947 spin_lock_irq(&bp->lock);
1948 if (epause->autoneg)
1949 bp->flags |= B44_FLAG_PAUSE_AUTO;
1950 else
1951 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1952 if (epause->rx_pause)
1953 bp->flags |= B44_FLAG_RX_PAUSE;
1954 else
1955 bp->flags &= ~B44_FLAG_RX_PAUSE;
1956 if (epause->tx_pause)
1957 bp->flags |= B44_FLAG_TX_PAUSE;
1958 else
1959 bp->flags &= ~B44_FLAG_TX_PAUSE;
1960 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1961 b44_halt(bp);
1962 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001963 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964 } else {
1965 __b44_set_flow_ctrl(bp, bp->flags);
1966 }
1967 spin_unlock_irq(&bp->lock);
1968
1969 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001970
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971 return 0;
1972}
1973
Francois Romieu33539302005-11-07 01:51:34 +01001974static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1975{
1976 switch(stringset) {
1977 case ETH_SS_STATS:
1978 memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
1979 break;
1980 }
1981}
1982
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001983static int b44_get_sset_count(struct net_device *dev, int sset)
Francois Romieu33539302005-11-07 01:51:34 +01001984{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001985 switch (sset) {
1986 case ETH_SS_STATS:
1987 return ARRAY_SIZE(b44_gstrings);
1988 default:
1989 return -EOPNOTSUPP;
1990 }
Francois Romieu33539302005-11-07 01:51:34 +01001991}
1992
1993static void b44_get_ethtool_stats(struct net_device *dev,
1994 struct ethtool_stats *stats, u64 *data)
1995{
1996 struct b44 *bp = netdev_priv(dev);
1997 u32 *val = &bp->hw_stats.tx_good_octets;
1998 u32 i;
1999
2000 spin_lock_irq(&bp->lock);
2001
2002 b44_stats_update(bp);
2003
2004 for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
2005 *data++ = *val++;
2006
2007 spin_unlock_irq(&bp->lock);
2008}
2009
Gary Zambrano52cafd92006-06-20 15:34:23 -07002010static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2011{
2012 struct b44 *bp = netdev_priv(dev);
2013
2014 wol->supported = WAKE_MAGIC;
2015 if (bp->flags & B44_FLAG_WOL_ENABLE)
2016 wol->wolopts = WAKE_MAGIC;
2017 else
2018 wol->wolopts = 0;
2019 memset(&wol->sopass, 0, sizeof(wol->sopass));
2020}
2021
2022static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2023{
2024 struct b44 *bp = netdev_priv(dev);
2025
2026 spin_lock_irq(&bp->lock);
2027 if (wol->wolopts & WAKE_MAGIC)
2028 bp->flags |= B44_FLAG_WOL_ENABLE;
2029 else
2030 bp->flags &= ~B44_FLAG_WOL_ENABLE;
2031 spin_unlock_irq(&bp->lock);
2032
2033 return 0;
2034}
2035
Jeff Garzik7282d492006-09-13 14:30:00 -04002036static const struct ethtool_ops b44_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037 .get_drvinfo = b44_get_drvinfo,
2038 .get_settings = b44_get_settings,
2039 .set_settings = b44_set_settings,
2040 .nway_reset = b44_nway_reset,
2041 .get_link = ethtool_op_get_link,
Gary Zambrano52cafd92006-06-20 15:34:23 -07002042 .get_wol = b44_get_wol,
2043 .set_wol = b44_set_wol,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044 .get_ringparam = b44_get_ringparam,
2045 .set_ringparam = b44_set_ringparam,
2046 .get_pauseparam = b44_get_pauseparam,
2047 .set_pauseparam = b44_set_pauseparam,
2048 .get_msglevel = b44_get_msglevel,
2049 .set_msglevel = b44_set_msglevel,
Francois Romieu33539302005-11-07 01:51:34 +01002050 .get_strings = b44_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002051 .get_sset_count = b44_get_sset_count,
Francois Romieu33539302005-11-07 01:51:34 +01002052 .get_ethtool_stats = b44_get_ethtool_stats,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053};
2054
2055static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2056{
2057 struct mii_ioctl_data *data = if_mii(ifr);
2058 struct b44 *bp = netdev_priv(dev);
Francois Romieu34105722005-11-30 22:32:13 +01002059 int err = -EINVAL;
2060
2061 if (!netif_running(dev))
2062 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063
2064 spin_lock_irq(&bp->lock);
2065 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
2066 spin_unlock_irq(&bp->lock);
Francois Romieu34105722005-11-30 22:32:13 +01002067out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068 return err;
2069}
2070
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071static int __devinit b44_get_invariants(struct b44 *bp)
2072{
Michael Buesch753f4922007-09-19 14:20:30 -07002073 struct ssb_device *sdev = bp->sdev;
2074 int err = 0;
2075 u8 *addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076
Michael Buesch753f4922007-09-19 14:20:30 -07002077 bp->dma_offset = ssb_dma_translation(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078
Michael Buesch753f4922007-09-19 14:20:30 -07002079 if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
2080 instance > 1) {
Larry Finger458414b2007-11-09 16:56:10 -06002081 addr = sdev->bus->sprom.et1mac;
2082 bp->phy_addr = sdev->bus->sprom.et1phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002083 } else {
Larry Finger458414b2007-11-09 16:56:10 -06002084 addr = sdev->bus->sprom.et0mac;
2085 bp->phy_addr = sdev->bus->sprom.et0phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002086 }
Michael Buesch5ea79632008-03-25 18:04:46 +01002087 /* Some ROMs have buggy PHY addresses with the high
2088 * bits set (sign extension?). Truncate them to a
2089 * valid PHY address. */
2090 bp->phy_addr &= 0x1F;
2091
Michael Buesch753f4922007-09-19 14:20:30 -07002092 memcpy(bp->dev->dev_addr, addr, 6);
Gary Zambrano391fc092006-03-28 14:57:38 -08002093
2094 if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
Joe Perches2fc96ff2010-02-17 15:01:50 +00002095 pr_err("Invalid MAC address found in EEPROM\n");
Gary Zambrano391fc092006-03-28 14:57:38 -08002096 return -EINVAL;
2097 }
2098
John W. Linville2160de52005-09-12 10:48:55 -04002099 memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101 bp->imask = IMASK_DEF;
2102
Jeff Garzik10badc22006-04-12 18:04:32 -04002103 /* XXX - really required?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 bp->flags |= B44_FLAG_BUGGY_TXPTR;
Michael Buesch753f4922007-09-19 14:20:30 -07002105 */
Gary Zambrano52cafd92006-06-20 15:34:23 -07002106
Michael Buesch753f4922007-09-19 14:20:30 -07002107 if (bp->sdev->id.revision >= 7)
2108 bp->flags |= B44_FLAG_B0_ANDLATER;
Gary Zambrano52cafd92006-06-20 15:34:23 -07002109
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 return err;
2111}
2112
Stephen Hemminger403413e2009-01-07 18:10:49 -08002113static const struct net_device_ops b44_netdev_ops = {
2114 .ndo_open = b44_open,
2115 .ndo_stop = b44_close,
2116 .ndo_start_xmit = b44_start_xmit,
2117 .ndo_get_stats = b44_get_stats,
2118 .ndo_set_multicast_list = b44_set_rx_mode,
2119 .ndo_set_mac_address = b44_set_mac_addr,
2120 .ndo_validate_addr = eth_validate_addr,
2121 .ndo_do_ioctl = b44_ioctl,
2122 .ndo_tx_timeout = b44_tx_timeout,
2123 .ndo_change_mtu = b44_change_mtu,
2124#ifdef CONFIG_NET_POLL_CONTROLLER
2125 .ndo_poll_controller = b44_poll_controller,
2126#endif
2127};
2128
Michael Buesch753f4922007-09-19 14:20:30 -07002129static int __devinit b44_init_one(struct ssb_device *sdev,
2130 const struct ssb_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131{
2132 static int b44_version_printed = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133 struct net_device *dev;
2134 struct b44 *bp;
Joe Perches0795af52007-10-03 17:59:30 -07002135 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002136
Michael Buesch753f4922007-09-19 14:20:30 -07002137 instance++;
2138
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139 if (b44_version_printed++ == 0)
Joe Perches2fc96ff2010-02-17 15:01:50 +00002140 pr_info("%s", version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142
2143 dev = alloc_etherdev(sizeof(*bp));
2144 if (!dev) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002145 dev_err(sdev->dev, "Etherdev alloc failed, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146 err = -ENOMEM;
Michael Buesch753f4922007-09-19 14:20:30 -07002147 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148 }
2149
Michael Buesch753f4922007-09-19 14:20:30 -07002150 SET_NETDEV_DEV(dev, sdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151
2152 /* No interesting netdevice features in this card... */
2153 dev->features |= 0;
2154
2155 bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07002156 bp->sdev = sdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 bp->dev = dev;
Eric Dumazeta58c8912009-01-15 15:29:35 -08002158 bp->force_copybreak = 0;
Francois Romieu874a6212005-11-07 01:50:46 +01002159
2160 bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161
2162 spin_lock_init(&bp->lock);
2163
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164 bp->rx_pending = B44_DEF_RX_RING_PENDING;
2165 bp->tx_pending = B44_DEF_TX_RING_PENDING;
2166
Stephen Hemminger403413e2009-01-07 18:10:49 -08002167 dev->netdev_ops = &b44_netdev_ops;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002168 netif_napi_add(dev, &bp->napi, b44_poll, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169 dev->watchdog_timeo = B44_TX_TIMEOUT;
Michael Buesch753f4922007-09-19 14:20:30 -07002170 dev->irq = sdev->irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
2172
Michael Buesch753f4922007-09-19 14:20:30 -07002173 err = ssb_bus_powerup(sdev->bus, 0);
2174 if (err) {
2175 dev_err(sdev->dev,
2176 "Failed to powerup the bus\n");
2177 goto err_out_free_dev;
2178 }
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07002179
2180 if (dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(30)) ||
2181 dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(30))) {
Michael Buesch753f4922007-09-19 14:20:30 -07002182 dev_err(sdev->dev,
Joe Perches2fc96ff2010-02-17 15:01:50 +00002183 "Required 30BIT DMA mask unsupported by the system\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002184 goto err_out_powerdown;
2185 }
FUJITA Tomonori39a6f4b2010-06-03 19:37:40 -07002186
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187 err = b44_get_invariants(bp);
2188 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002189 dev_err(sdev->dev,
Joe Perches2fc96ff2010-02-17 15:01:50 +00002190 "Problem fetching invariants of chip, aborting\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002191 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002192 }
2193
2194 bp->mii_if.dev = dev;
2195 bp->mii_if.mdio_read = b44_mii_read;
2196 bp->mii_if.mdio_write = b44_mii_write;
2197 bp->mii_if.phy_id = bp->phy_addr;
2198 bp->mii_if.phy_id_mask = 0x1f;
2199 bp->mii_if.reg_num_mask = 0x1f;
2200
2201 /* By default, advertise all speed/duplex settings. */
2202 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
2203 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
2204
2205 /* By default, auto-negotiate PAUSE. */
2206 bp->flags |= B44_FLAG_PAUSE_AUTO;
2207
2208 err = register_netdev(dev);
2209 if (err) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002210 dev_err(sdev->dev, "Cannot register net device, aborting\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002211 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002212 }
2213
Paul Fertserbcf64aa2010-10-11 15:45:35 -07002214 netif_carrier_off(dev);
2215
Michael Buesch753f4922007-09-19 14:20:30 -07002216 ssb_set_drvdata(sdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217
Jeff Garzik10badc22006-04-12 18:04:32 -04002218 /* Chip reset provides power to the b44 MAC & PCI cores, which
Gary Zambrano5c513122006-03-29 17:12:05 -05002219 * is necessary for MAC register access.
Jeff Garzik10badc22006-04-12 18:04:32 -04002220 */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002221 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Gary Zambrano5c513122006-03-29 17:12:05 -05002222
Hauke Mehrtens8850dce2010-02-20 10:55:25 +00002223 /* do a phy reset to test if there is an active phy */
2224 if (b44_phy_reset(bp) < 0)
2225 bp->phy_addr = B44_PHY_ADDR_NO_PHY;
2226
Joe Perches2fc96ff2010-02-17 15:01:50 +00002227 netdev_info(dev, "Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n",
2228 dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229
2230 return 0;
2231
Michael Buesch753f4922007-09-19 14:20:30 -07002232err_out_powerdown:
2233 ssb_bus_may_powerdown(sdev->bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234
2235err_out_free_dev:
2236 free_netdev(dev);
2237
Michael Buesch753f4922007-09-19 14:20:30 -07002238out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002239 return err;
2240}
2241
Michael Buesch753f4922007-09-19 14:20:30 -07002242static void __devexit b44_remove_one(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002243{
Michael Buesch753f4922007-09-19 14:20:30 -07002244 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002245
Francois Romieu874a6212005-11-07 01:50:46 +01002246 unregister_netdev(dev);
Michael Buesche92aa632009-02-26 22:35:02 -08002247 ssb_device_disable(sdev, 0);
Michael Buesch753f4922007-09-19 14:20:30 -07002248 ssb_bus_may_powerdown(sdev->bus);
Francois Romieu874a6212005-11-07 01:50:46 +01002249 free_netdev(dev);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002250 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Michael Buesch753f4922007-09-19 14:20:30 -07002251 ssb_set_drvdata(sdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002252}
2253
Michael Buesch753f4922007-09-19 14:20:30 -07002254static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002255{
Michael Buesch753f4922007-09-19 14:20:30 -07002256 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002257 struct b44 *bp = netdev_priv(dev);
2258
Michael Buesch753f4922007-09-19 14:20:30 -07002259 if (!netif_running(dev))
2260 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261
2262 del_timer_sync(&bp->timer);
2263
Jeff Garzik10badc22006-04-12 18:04:32 -04002264 spin_lock_irq(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265
2266 b44_halt(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04002267 netif_carrier_off(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002268 netif_device_detach(bp->dev);
2269 b44_free_rings(bp);
2270
2271 spin_unlock_irq(&bp->lock);
Pavel Machek46e17852005-10-28 15:14:47 -07002272
2273 free_irq(dev->irq, dev);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002274 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08002275 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002276 b44_setup_wol(bp);
2277 }
Michael Buesch753f4922007-09-19 14:20:30 -07002278
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002279 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280 return 0;
2281}
2282
Michael Buesch753f4922007-09-19 14:20:30 -07002283static int b44_resume(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284{
Michael Buesch753f4922007-09-19 14:20:30 -07002285 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286 struct b44 *bp = netdev_priv(dev);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002287 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288
Michael Buesch753f4922007-09-19 14:20:30 -07002289 rc = ssb_bus_powerup(sdev->bus, 0);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002290 if (rc) {
Michael Buesch753f4922007-09-19 14:20:30 -07002291 dev_err(sdev->dev,
2292 "Failed to powerup the bus\n");
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002293 return rc;
2294 }
2295
Linus Torvalds1da177e2005-04-16 15:20:36 -07002296 if (!netif_running(dev))
2297 return 0;
2298
James Hoganafed4cc2010-10-17 01:48:59 +00002299 spin_lock_irq(&bp->lock);
2300 b44_init_rings(bp);
2301 b44_init_hw(bp, B44_FULL_RESET);
2302 spin_unlock_irq(&bp->lock);
2303
2304 /*
2305 * As a shared interrupt, the handler can be called immediately. To be
2306 * able to check the interrupt status the hardware must already be
2307 * powered back on (b44_init_hw).
2308 */
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002309 rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
2310 if (rc) {
Joe Perches2fc96ff2010-02-17 15:01:50 +00002311 netdev_err(dev, "request_irq failed\n");
James Hoganafed4cc2010-10-17 01:48:59 +00002312 spin_lock_irq(&bp->lock);
2313 b44_halt(bp);
2314 b44_free_rings(bp);
2315 spin_unlock_irq(&bp->lock);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002316 return rc;
2317 }
Pavel Machek46e17852005-10-28 15:14:47 -07002318
Linus Torvalds1da177e2005-04-16 15:20:36 -07002319 netif_device_attach(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01002322 netif_wake_queue(dev);
Stephen Hemmingera72a8172007-06-04 13:25:37 -07002323
2324 mod_timer(&bp->timer, jiffies + 1);
2325
Linus Torvalds1da177e2005-04-16 15:20:36 -07002326 return 0;
2327}
2328
Michael Buesch753f4922007-09-19 14:20:30 -07002329static struct ssb_driver b44_ssb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330 .name = DRV_MODULE_NAME,
Michael Buesch753f4922007-09-19 14:20:30 -07002331 .id_table = b44_ssb_tbl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002332 .probe = b44_init_one,
2333 .remove = __devexit_p(b44_remove_one),
Michael Buesch753f4922007-09-19 14:20:30 -07002334 .suspend = b44_suspend,
2335 .resume = b44_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002336};
2337
Michael Buesch753f4922007-09-19 14:20:30 -07002338static inline int b44_pci_init(void)
2339{
2340 int err = 0;
2341#ifdef CONFIG_B44_PCI
2342 err = ssb_pcihost_register(&b44_pci_driver);
2343#endif
2344 return err;
2345}
2346
2347static inline void b44_pci_exit(void)
2348{
2349#ifdef CONFIG_B44_PCI
2350 ssb_pcihost_unregister(&b44_pci_driver);
2351#endif
2352}
2353
Linus Torvalds1da177e2005-04-16 15:20:36 -07002354static int __init b44_init(void)
2355{
John W. Linville9f38c632005-10-18 21:30:59 -04002356 unsigned int dma_desc_align_size = dma_get_cache_alignment();
Michael Buesch753f4922007-09-19 14:20:30 -07002357 int err;
John W. Linville9f38c632005-10-18 21:30:59 -04002358
2359 /* Setup paramaters for syncing RX/TX DMA descriptors */
Alan Cox22d4d772006-01-17 17:53:56 +00002360 dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
John W. Linville9f38c632005-10-18 21:30:59 -04002361
Michael Buesch753f4922007-09-19 14:20:30 -07002362 err = b44_pci_init();
2363 if (err)
2364 return err;
2365 err = ssb_driver_register(&b44_ssb_driver);
2366 if (err)
2367 b44_pci_exit();
2368 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002369}
2370
2371static void __exit b44_cleanup(void)
2372{
Michael Buesch753f4922007-09-19 14:20:30 -07002373 ssb_driver_unregister(&b44_ssb_driver);
2374 b44_pci_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375}
2376
2377module_init(b44_init);
2378module_exit(b44_cleanup);
2379