Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1 | /* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
| 3 | * Copyright (C) 2002 David S. Miller (davem@redhat.com) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 4 | * 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 Zambrano | 8056bfa | 2006-04-10 12:05:40 -0700 | [diff] [blame] | 7 | * Copyright (C) 2006 Broadcom Corporation. |
Michael Büsch | eb032b9 | 2011-07-04 20:50:05 +0200 | [diff] [blame] | 8 | * Copyright (C) 2007 Michael Buesch <m@bues.ch> |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 9 | * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Distribute under GPL. |
| 12 | */ |
| 13 | |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/kernel.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/moduleparam.h> |
| 19 | #include <linux/types.h> |
| 20 | #include <linux/netdevice.h> |
| 21 | #include <linux/ethtool.h> |
| 22 | #include <linux/mii.h> |
| 23 | #include <linux/if_ether.h> |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 24 | #include <linux/if_vlan.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/etherdevice.h> |
| 26 | #include <linux/pci.h> |
| 27 | #include <linux/delay.h> |
| 28 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 29 | #include <linux/interrupt.h> |
Andrew Morton | 89358f9 | 2005-10-28 16:38:02 -0400 | [diff] [blame] | 30 | #include <linux/dma-mapping.h> |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 31 | #include <linux/ssb/ssb.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 32 | #include <linux/slab.h> |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 33 | #include <linux/phy.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <asm/io.h> |
| 37 | #include <asm/irq.h> |
| 38 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "b44.h" |
| 41 | |
| 42 | #define DRV_MODULE_NAME "b44" |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 43 | #define DRV_MODULE_VERSION "2.0" |
Joe Perches | 7329f0d | 2011-07-05 07:43:46 +0000 | [diff] [blame] | 44 | #define DRV_DESCRIPTION "Broadcom 44xx/47xx 10/100 PCI ethernet driver" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #define B44_DEF_MSG_ENABLE \ |
| 47 | (NETIF_MSG_DRV | \ |
| 48 | NETIF_MSG_PROBE | \ |
| 49 | NETIF_MSG_LINK | \ |
| 50 | NETIF_MSG_TIMER | \ |
| 51 | NETIF_MSG_IFDOWN | \ |
| 52 | NETIF_MSG_IFUP | \ |
| 53 | NETIF_MSG_RX_ERR | \ |
| 54 | NETIF_MSG_TX_ERR) |
| 55 | |
| 56 | /* length of time before we decide the hardware is borked, |
| 57 | * and dev->tx_timeout() should be called to fix the problem |
| 58 | */ |
| 59 | #define B44_TX_TIMEOUT (5 * HZ) |
| 60 | |
| 61 | /* hardware minimum and maximum for a single frame's data payload */ |
| 62 | #define B44_MIN_MTU 60 |
| 63 | #define B44_MAX_MTU 1500 |
| 64 | |
| 65 | #define B44_RX_RING_SIZE 512 |
| 66 | #define B44_DEF_RX_RING_PENDING 200 |
| 67 | #define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \ |
| 68 | B44_RX_RING_SIZE) |
| 69 | #define B44_TX_RING_SIZE 512 |
| 70 | #define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1) |
| 71 | #define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \ |
| 72 | B44_TX_RING_SIZE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | #define TX_RING_GAP(BP) \ |
| 75 | (B44_TX_RING_SIZE - (BP)->tx_pending) |
| 76 | #define TX_BUFFS_AVAIL(BP) \ |
| 77 | (((BP)->tx_cons <= (BP)->tx_prod) ? \ |
| 78 | (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \ |
| 79 | (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP)) |
| 80 | #define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1)) |
| 81 | |
Felix Fietkau | 4ca8579 | 2009-01-09 02:39:57 +0000 | [diff] [blame] | 82 | #define RX_PKT_OFFSET (RX_HEADER_LEN + 2) |
| 83 | #define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
| 85 | /* minimum number of free TX descriptors required to wake up TX process */ |
| 86 | #define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4) |
| 87 | |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 88 | /* b44 internal pattern match filter info */ |
| 89 | #define B44_PATTERN_BASE 0x400 |
| 90 | #define B44_PATTERN_SIZE 0x80 |
| 91 | #define B44_PMASK_BASE 0x600 |
| 92 | #define B44_PMASK_SIZE 0x10 |
| 93 | #define B44_MAX_PATTERNS 16 |
| 94 | #define B44_ETHIPV6UDP_HLEN 62 |
| 95 | #define B44_ETHIPV4UDP_HLEN 42 |
| 96 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 97 | MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller"); |
Joe Perches | 7329f0d | 2011-07-05 07:43:46 +0000 | [diff] [blame] | 98 | MODULE_DESCRIPTION(DRV_DESCRIPTION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | MODULE_LICENSE("GPL"); |
| 100 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 101 | |
| 102 | static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */ |
| 103 | module_param(b44_debug, int, 0); |
| 104 | MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value"); |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 107 | #ifdef CONFIG_B44_PCI |
Benoit Taine | 9baa3c3 | 2014-08-08 15:56:03 +0200 | [diff] [blame] | 108 | static const struct pci_device_id b44_pci_tbl[] = { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 109 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) }, |
| 110 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) }, |
| 111 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) }, |
| 112 | { 0 } /* terminate list with empty entry */ |
| 113 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | MODULE_DEVICE_TABLE(pci, b44_pci_tbl); |
| 115 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 116 | static struct pci_driver b44_pci_driver = { |
| 117 | .name = DRV_MODULE_NAME, |
| 118 | .id_table = b44_pci_tbl, |
| 119 | }; |
| 120 | #endif /* CONFIG_B44_PCI */ |
| 121 | |
| 122 | static const struct ssb_device_id b44_ssb_tbl[] = { |
| 123 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV), |
Joe Perches | 673e2ba | 2015-02-10 13:19:24 -0800 | [diff] [blame] | 124 | {}, |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 125 | }; |
| 126 | MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl); |
| 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | static void b44_halt(struct b44 *); |
| 129 | static void b44_init_rings(struct b44 *); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 130 | |
| 131 | #define B44_FULL_RESET 1 |
| 132 | #define B44_FULL_RESET_SKIP_PHY 2 |
| 133 | #define B44_PARTIAL_RESET 3 |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 134 | #define B44_CHIP_RESET_FULL 4 |
| 135 | #define B44_CHIP_RESET_PARTIAL 5 |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 136 | |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 137 | static void b44_init_hw(struct b44 *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 139 | static int dma_desc_sync_size; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 140 | static int instance; |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 141 | |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 142 | static const char b44_gstrings[][ETH_GSTRING_LEN] = { |
| 143 | #define _B44(x...) # x, |
| 144 | B44_STAT_REG_DECLARE |
| 145 | #undef _B44 |
| 146 | }; |
| 147 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 148 | static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev, |
| 149 | dma_addr_t dma_base, |
| 150 | unsigned long offset, |
| 151 | enum dma_data_direction dir) |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 152 | { |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 153 | dma_sync_single_for_device(sdev->dma_dev, dma_base + offset, |
| 154 | dma_desc_sync_size, dir); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 155 | } |
| 156 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 157 | static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev, |
| 158 | dma_addr_t dma_base, |
| 159 | unsigned long offset, |
| 160 | enum dma_data_direction dir) |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 161 | { |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 162 | dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset, |
| 163 | dma_desc_sync_size, dir); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 164 | } |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | static inline unsigned long br32(const struct b44 *bp, unsigned long reg) |
| 167 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 168 | return ssb_read32(bp->sdev, reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 171 | static inline void bw32(const struct b44 *bp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | unsigned long reg, unsigned long val) |
| 173 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 174 | ssb_write32(bp->sdev, reg, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | static int b44_wait_bit(struct b44 *bp, unsigned long reg, |
| 178 | u32 bit, unsigned long timeout, const int clear) |
| 179 | { |
| 180 | unsigned long i; |
| 181 | |
| 182 | for (i = 0; i < timeout; i++) { |
| 183 | u32 val = br32(bp, reg); |
| 184 | |
| 185 | if (clear && !(val & bit)) |
| 186 | break; |
| 187 | if (!clear && (val & bit)) |
| 188 | break; |
| 189 | udelay(10); |
| 190 | } |
| 191 | if (i == timeout) { |
Jochen Friedrich | f6ca057 | 2010-02-12 10:11:54 +0000 | [diff] [blame] | 192 | if (net_ratelimit()) |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 193 | netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n", |
| 194 | bit, reg, clear ? "clear" : "set"); |
| 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | return -ENODEV; |
| 197 | } |
| 198 | return 0; |
| 199 | } |
| 200 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 201 | static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | { |
| 203 | u32 val; |
| 204 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 205 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ | |
| 206 | (index << CAM_CTRL_INDEX_SHIFT))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 208 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 210 | val = br32(bp, B44_CAM_DATA_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 212 | data[2] = (val >> 24) & 0xFF; |
| 213 | data[3] = (val >> 16) & 0xFF; |
| 214 | data[4] = (val >> 8) & 0xFF; |
| 215 | data[5] = (val >> 0) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 217 | val = br32(bp, B44_CAM_DATA_HI); |
| 218 | |
| 219 | data[0] = (val >> 8) & 0xFF; |
| 220 | data[1] = (val >> 0) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 223 | static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | { |
| 225 | u32 val; |
| 226 | |
| 227 | val = ((u32) data[2]) << 24; |
| 228 | val |= ((u32) data[3]) << 16; |
| 229 | val |= ((u32) data[4]) << 8; |
| 230 | val |= ((u32) data[5]) << 0; |
| 231 | bw32(bp, B44_CAM_DATA_LO, val); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 232 | val = (CAM_DATA_HI_VALID | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | (((u32) data[0]) << 8) | |
| 234 | (((u32) data[1]) << 0)); |
| 235 | bw32(bp, B44_CAM_DATA_HI, val); |
| 236 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE | |
| 237 | (index << CAM_CTRL_INDEX_SHIFT))); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 238 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | static inline void __b44_disable_ints(struct b44 *bp) |
| 242 | { |
| 243 | bw32(bp, B44_IMASK, 0); |
| 244 | } |
| 245 | |
| 246 | static void b44_disable_ints(struct b44 *bp) |
| 247 | { |
| 248 | __b44_disable_ints(bp); |
| 249 | |
| 250 | /* Flush posted writes. */ |
| 251 | br32(bp, B44_IMASK); |
| 252 | } |
| 253 | |
| 254 | static void b44_enable_ints(struct b44 *bp) |
| 255 | { |
| 256 | bw32(bp, B44_IMASK, bp->imask); |
| 257 | } |
| 258 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 259 | static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | { |
| 261 | int err; |
| 262 | |
| 263 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); |
| 264 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | |
| 265 | (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 266 | (phy_addr << MDIO_DATA_PMD_SHIFT) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | (reg << MDIO_DATA_RA_SHIFT) | |
| 268 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT))); |
| 269 | err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); |
| 270 | *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA; |
| 271 | |
| 272 | return err; |
| 273 | } |
| 274 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 275 | static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | { |
| 277 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); |
| 278 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | |
| 279 | (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 280 | (phy_addr << MDIO_DATA_PMD_SHIFT) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | (reg << MDIO_DATA_RA_SHIFT) | |
| 282 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) | |
| 283 | (val & MDIO_DATA_DATA))); |
| 284 | return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); |
| 285 | } |
| 286 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 287 | static inline int b44_readphy(struct b44 *bp, int reg, u32 *val) |
| 288 | { |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 289 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 290 | return 0; |
| 291 | |
| 292 | return __b44_readphy(bp, bp->phy_addr, reg, val); |
| 293 | } |
| 294 | |
| 295 | static inline int b44_writephy(struct b44 *bp, int reg, u32 val) |
| 296 | { |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 297 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 298 | return 0; |
| 299 | |
| 300 | return __b44_writephy(bp, bp->phy_addr, reg, val); |
| 301 | } |
| 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | /* miilib interface */ |
Hauke Mehrtens | 348baa6 | 2013-12-20 02:16:09 +0100 | [diff] [blame] | 304 | static int b44_mdio_read_mii(struct net_device *dev, int phy_id, int location) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { |
| 306 | u32 val; |
| 307 | struct b44 *bp = netdev_priv(dev); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 308 | int rc = __b44_readphy(bp, phy_id, location, &val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | if (rc) |
| 310 | return 0xffffffff; |
| 311 | return val; |
| 312 | } |
| 313 | |
Hauke Mehrtens | 348baa6 | 2013-12-20 02:16:09 +0100 | [diff] [blame] | 314 | static void b44_mdio_write_mii(struct net_device *dev, int phy_id, int location, |
| 315 | int val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
| 317 | struct b44 *bp = netdev_priv(dev); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 318 | __b44_writephy(bp, phy_id, location, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 321 | static int b44_mdio_read_phylib(struct mii_bus *bus, int phy_id, int location) |
| 322 | { |
| 323 | u32 val; |
| 324 | struct b44 *bp = bus->priv; |
| 325 | int rc = __b44_readphy(bp, phy_id, location, &val); |
| 326 | if (rc) |
| 327 | return 0xffffffff; |
| 328 | return val; |
| 329 | } |
| 330 | |
| 331 | static int b44_mdio_write_phylib(struct mii_bus *bus, int phy_id, int location, |
| 332 | u16 val) |
| 333 | { |
| 334 | struct b44 *bp = bus->priv; |
| 335 | return __b44_writephy(bp, phy_id, location, val); |
| 336 | } |
| 337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | static int b44_phy_reset(struct b44 *bp) |
| 339 | { |
| 340 | u32 val; |
| 341 | int err; |
| 342 | |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 343 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 344 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | err = b44_writephy(bp, MII_BMCR, BMCR_RESET); |
| 346 | if (err) |
| 347 | return err; |
| 348 | udelay(100); |
| 349 | err = b44_readphy(bp, MII_BMCR, &val); |
| 350 | if (!err) { |
| 351 | if (val & BMCR_RESET) { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 352 | netdev_err(bp->dev, "PHY Reset would not complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | err = -ENODEV; |
| 354 | } |
| 355 | } |
| 356 | |
Hauke Mehrtens | 8850dce | 2010-02-20 10:55:25 +0000 | [diff] [blame] | 357 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags) |
| 361 | { |
| 362 | u32 val; |
| 363 | |
| 364 | bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE); |
| 365 | bp->flags |= pause_flags; |
| 366 | |
| 367 | val = br32(bp, B44_RXCONFIG); |
| 368 | if (pause_flags & B44_FLAG_RX_PAUSE) |
| 369 | val |= RXCONFIG_FLOW; |
| 370 | else |
| 371 | val &= ~RXCONFIG_FLOW; |
| 372 | bw32(bp, B44_RXCONFIG, val); |
| 373 | |
| 374 | val = br32(bp, B44_MAC_FLOW); |
| 375 | if (pause_flags & B44_FLAG_TX_PAUSE) |
| 376 | val |= (MAC_FLOW_PAUSE_ENAB | |
| 377 | (0xc0 & MAC_FLOW_RX_HI_WATER)); |
| 378 | else |
| 379 | val &= ~MAC_FLOW_PAUSE_ENAB; |
| 380 | bw32(bp, B44_MAC_FLOW, val); |
| 381 | } |
| 382 | |
| 383 | static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote) |
| 384 | { |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 385 | u32 pause_enab = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Gary Zambrano | 2b474cf | 2006-04-10 12:02:21 -0700 | [diff] [blame] | 387 | /* The driver supports only rx pause by default because |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 388 | the b44 mac tx pause mechanism generates excessive |
| 389 | pause frames. |
Gary Zambrano | 2b474cf | 2006-04-10 12:02:21 -0700 | [diff] [blame] | 390 | Use ethtool to turn on b44 tx pause if necessary. |
| 391 | */ |
| 392 | if ((local & ADVERTISE_PAUSE_CAP) && |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 393 | (local & ADVERTISE_PAUSE_ASYM)){ |
Gary Zambrano | 2b474cf | 2006-04-10 12:02:21 -0700 | [diff] [blame] | 394 | if ((remote & LPA_PAUSE_ASYM) && |
| 395 | !(remote & LPA_PAUSE_CAP)) |
| 396 | pause_enab |= B44_FLAG_RX_PAUSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | __b44_set_flow_ctrl(bp, pause_enab); |
| 400 | } |
| 401 | |
Hauke Mehrtens | 6c08af0 | 2010-11-27 06:47:43 +0000 | [diff] [blame] | 402 | #ifdef CONFIG_BCM47XX |
Hauke Mehrtens | 111bd98 | 2012-12-26 19:51:14 +0000 | [diff] [blame] | 403 | #include <bcm47xx_nvram.h> |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 404 | static void b44_wap54g10_workaround(struct b44 *bp) |
| 405 | { |
Hauke Mehrtens | 6c08af0 | 2010-11-27 06:47:43 +0000 | [diff] [blame] | 406 | char buf[20]; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 407 | u32 val; |
| 408 | int err; |
| 409 | |
| 410 | /* |
| 411 | * workaround for bad hardware design in Linksys WAP54G v1.0 |
| 412 | * see https://dev.openwrt.org/ticket/146 |
| 413 | * check and reset bit "isolate" |
| 414 | */ |
Hauke Mehrtens | 111bd98 | 2012-12-26 19:51:14 +0000 | [diff] [blame] | 415 | if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) < 0) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 416 | return; |
Hauke Mehrtens | 6c08af0 | 2010-11-27 06:47:43 +0000 | [diff] [blame] | 417 | if (simple_strtoul(buf, NULL, 0) == 2) { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 418 | err = __b44_readphy(bp, 0, MII_BMCR, &val); |
| 419 | if (err) |
| 420 | goto error; |
| 421 | if (!(val & BMCR_ISOLATE)) |
| 422 | return; |
| 423 | val &= ~BMCR_ISOLATE; |
| 424 | err = __b44_writephy(bp, 0, MII_BMCR, val); |
| 425 | if (err) |
| 426 | goto error; |
| 427 | } |
| 428 | return; |
| 429 | error: |
Joe Perches | fe3881c | 2014-09-09 20:27:44 -0700 | [diff] [blame] | 430 | pr_warn("PHY: cannot reset MII transceiver isolate bit\n"); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 431 | } |
| 432 | #else |
| 433 | static inline void b44_wap54g10_workaround(struct b44 *bp) |
| 434 | { |
| 435 | } |
| 436 | #endif |
| 437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | static int b44_setup_phy(struct b44 *bp) |
| 439 | { |
| 440 | u32 val; |
| 441 | int err; |
| 442 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 443 | b44_wap54g10_workaround(bp); |
| 444 | |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 445 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 446 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0) |
| 448 | goto out; |
| 449 | if ((err = b44_writephy(bp, B44_MII_ALEDCTRL, |
| 450 | val & MII_ALEDCTRL_ALLMSK)) != 0) |
| 451 | goto out; |
| 452 | if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0) |
| 453 | goto out; |
| 454 | if ((err = b44_writephy(bp, B44_MII_TLEDCTRL, |
| 455 | val | MII_TLEDCTRL_ENABLE)) != 0) |
| 456 | goto out; |
| 457 | |
| 458 | if (!(bp->flags & B44_FLAG_FORCE_LINK)) { |
| 459 | u32 adv = ADVERTISE_CSMA; |
| 460 | |
| 461 | if (bp->flags & B44_FLAG_ADV_10HALF) |
| 462 | adv |= ADVERTISE_10HALF; |
| 463 | if (bp->flags & B44_FLAG_ADV_10FULL) |
| 464 | adv |= ADVERTISE_10FULL; |
| 465 | if (bp->flags & B44_FLAG_ADV_100HALF) |
| 466 | adv |= ADVERTISE_100HALF; |
| 467 | if (bp->flags & B44_FLAG_ADV_100FULL) |
| 468 | adv |= ADVERTISE_100FULL; |
| 469 | |
| 470 | if (bp->flags & B44_FLAG_PAUSE_AUTO) |
| 471 | adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; |
| 472 | |
| 473 | if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0) |
| 474 | goto out; |
| 475 | if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE | |
| 476 | BMCR_ANRESTART))) != 0) |
| 477 | goto out; |
| 478 | } else { |
| 479 | u32 bmcr; |
| 480 | |
| 481 | if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0) |
| 482 | goto out; |
| 483 | bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100); |
| 484 | if (bp->flags & B44_FLAG_100_BASE_T) |
| 485 | bmcr |= BMCR_SPEED100; |
| 486 | if (bp->flags & B44_FLAG_FULL_DUPLEX) |
| 487 | bmcr |= BMCR_FULLDPLX; |
| 488 | if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0) |
| 489 | goto out; |
| 490 | |
| 491 | /* Since we will not be negotiating there is no safe way |
| 492 | * to determine if the link partner supports flow control |
| 493 | * or not. So just disable it completely in this case. |
| 494 | */ |
| 495 | b44_set_flow_ctrl(bp, 0, 0); |
| 496 | } |
| 497 | |
| 498 | out: |
| 499 | return err; |
| 500 | } |
| 501 | |
| 502 | static void b44_stats_update(struct b44 *bp) |
| 503 | { |
| 504 | unsigned long reg; |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 505 | u64 *val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | val = &bp->hw_stats.tx_good_octets; |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 508 | u64_stats_update_begin(&bp->hw_stats.syncp); |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) { |
| 511 | *val++ += br32(bp, reg); |
| 512 | } |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 513 | |
| 514 | /* Pad */ |
| 515 | reg += 8*4UL; |
| 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) { |
| 518 | *val++ += br32(bp, reg); |
| 519 | } |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 520 | |
| 521 | u64_stats_update_end(&bp->hw_stats.syncp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | static void b44_link_report(struct b44 *bp) |
| 525 | { |
| 526 | if (!netif_carrier_ok(bp->dev)) { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 527 | netdev_info(bp->dev, "Link is down\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } else { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 529 | netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n", |
| 530 | (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10, |
| 531 | (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 533 | netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n", |
| 534 | (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off", |
| 535 | (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | } |
| 538 | |
| 539 | static void b44_check_phy(struct b44 *bp) |
| 540 | { |
| 541 | u32 bmsr, aux; |
| 542 | |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 543 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 544 | bp->flags |= B44_FLAG_100_BASE_T; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 545 | if (!netif_carrier_ok(bp->dev)) { |
| 546 | u32 val = br32(bp, B44_TX_CTRL); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 547 | if (bp->flags & B44_FLAG_FULL_DUPLEX) |
| 548 | val |= TX_CTRL_DUPLEX; |
| 549 | else |
| 550 | val &= ~TX_CTRL_DUPLEX; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 551 | bw32(bp, B44_TX_CTRL, val); |
| 552 | netif_carrier_on(bp->dev); |
| 553 | b44_link_report(bp); |
| 554 | } |
| 555 | return; |
| 556 | } |
| 557 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | if (!b44_readphy(bp, MII_BMSR, &bmsr) && |
| 559 | !b44_readphy(bp, B44_MII_AUXCTRL, &aux) && |
| 560 | (bmsr != 0xffff)) { |
| 561 | if (aux & MII_AUXCTRL_SPEED) |
| 562 | bp->flags |= B44_FLAG_100_BASE_T; |
| 563 | else |
| 564 | bp->flags &= ~B44_FLAG_100_BASE_T; |
| 565 | if (aux & MII_AUXCTRL_DUPLEX) |
| 566 | bp->flags |= B44_FLAG_FULL_DUPLEX; |
| 567 | else |
| 568 | bp->flags &= ~B44_FLAG_FULL_DUPLEX; |
| 569 | |
| 570 | if (!netif_carrier_ok(bp->dev) && |
| 571 | (bmsr & BMSR_LSTATUS)) { |
| 572 | u32 val = br32(bp, B44_TX_CTRL); |
| 573 | u32 local_adv, remote_adv; |
| 574 | |
| 575 | if (bp->flags & B44_FLAG_FULL_DUPLEX) |
| 576 | val |= TX_CTRL_DUPLEX; |
| 577 | else |
| 578 | val &= ~TX_CTRL_DUPLEX; |
| 579 | bw32(bp, B44_TX_CTRL, val); |
| 580 | |
| 581 | if (!(bp->flags & B44_FLAG_FORCE_LINK) && |
| 582 | !b44_readphy(bp, MII_ADVERTISE, &local_adv) && |
| 583 | !b44_readphy(bp, MII_LPA, &remote_adv)) |
| 584 | b44_set_flow_ctrl(bp, local_adv, remote_adv); |
| 585 | |
| 586 | /* Link now up */ |
| 587 | netif_carrier_on(bp->dev); |
| 588 | b44_link_report(bp); |
| 589 | } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) { |
| 590 | /* Link now down */ |
| 591 | netif_carrier_off(bp->dev); |
| 592 | b44_link_report(bp); |
| 593 | } |
| 594 | |
| 595 | if (bmsr & BMSR_RFAULT) |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 596 | netdev_warn(bp->dev, "Remote fault detected in PHY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | if (bmsr & BMSR_JCD) |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 598 | netdev_warn(bp->dev, "Jabber detected in PHY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | } |
| 600 | } |
| 601 | |
| 602 | static void b44_timer(unsigned long __opaque) |
| 603 | { |
| 604 | struct b44 *bp = (struct b44 *) __opaque; |
| 605 | |
| 606 | spin_lock_irq(&bp->lock); |
| 607 | |
| 608 | b44_check_phy(bp); |
| 609 | |
| 610 | b44_stats_update(bp); |
| 611 | |
| 612 | spin_unlock_irq(&bp->lock); |
| 613 | |
Stephen Hemminger | a72a817 | 2007-06-04 13:25:37 -0700 | [diff] [blame] | 614 | mod_timer(&bp->timer, round_jiffies(jiffies + HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | static void b44_tx(struct b44 *bp) |
| 618 | { |
| 619 | u32 cur, cons; |
Hauke Mehrtens | 5055544 | 2013-09-28 23:22:18 +0200 | [diff] [blame] | 620 | unsigned bytes_compl = 0, pkts_compl = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
| 622 | cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK; |
| 623 | cur /= sizeof(struct dma_desc); |
| 624 | |
| 625 | /* XXX needs updating when NETIF_F_SG is supported */ |
| 626 | for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) { |
| 627 | struct ring_info *rp = &bp->tx_buffers[cons]; |
| 628 | struct sk_buff *skb = rp->skb; |
| 629 | |
Eric Sesterhenn | 5d9428d | 2006-04-02 13:52:48 +0200 | [diff] [blame] | 630 | BUG_ON(skb == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 632 | dma_unmap_single(bp->sdev->dma_dev, |
| 633 | rp->mapping, |
| 634 | skb->len, |
| 635 | DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | rp->skb = NULL; |
Hauke Mehrtens | 5055544 | 2013-09-28 23:22:18 +0200 | [diff] [blame] | 637 | |
| 638 | bytes_compl += skb->len; |
| 639 | pkts_compl++; |
| 640 | |
Xander Hover | 15ac2b08a | 2011-11-23 16:40:31 -0500 | [diff] [blame] | 641 | dev_kfree_skb_irq(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
Hauke Mehrtens | 5055544 | 2013-09-28 23:22:18 +0200 | [diff] [blame] | 644 | netdev_completed_queue(bp->dev, pkts_compl, bytes_compl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | bp->tx_cons = cons; |
| 646 | if (netif_queue_stopped(bp->dev) && |
| 647 | TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH) |
| 648 | netif_wake_queue(bp->dev); |
| 649 | |
| 650 | bw32(bp, B44_GPTIMER, 0); |
| 651 | } |
| 652 | |
| 653 | /* Works like this. This chip writes a 'struct rx_header" 30 bytes |
| 654 | * before the DMA address you give it. So we allocate 30 more bytes |
| 655 | * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then |
| 656 | * point the chip at 30 bytes past where the rx_header will go. |
| 657 | */ |
| 658 | static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) |
| 659 | { |
| 660 | struct dma_desc *dp; |
| 661 | struct ring_info *src_map, *map; |
| 662 | struct rx_header *rh; |
| 663 | struct sk_buff *skb; |
| 664 | dma_addr_t mapping; |
| 665 | int dest_idx; |
| 666 | u32 ctrl; |
| 667 | |
| 668 | src_map = NULL; |
| 669 | if (src_idx >= 0) |
| 670 | src_map = &bp->rx_buffers[src_idx]; |
| 671 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); |
| 672 | map = &bp->rx_buffers[dest_idx]; |
Stephen Hemminger | bf0dcbd | 2007-06-04 13:25:40 -0700 | [diff] [blame] | 673 | skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | if (skb == NULL) |
| 675 | return -ENOMEM; |
| 676 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 677 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, |
| 678 | RX_PKT_BUF_SZ, |
| 679 | DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
| 681 | /* Hardware bug work-around, the chip is unable to do PCI DMA |
| 682 | to/from anything above 1GB :-( */ |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 683 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || |
Yang Hongyang | 28b7679 | 2009-04-06 19:01:17 -0700 | [diff] [blame] | 684 | mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | /* Sigh... */ |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 686 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
| 687 | dma_unmap_single(bp->sdev->dma_dev, mapping, |
Michael Buesch | f225763 | 2008-06-20 11:50:29 +0200 | [diff] [blame] | 688 | RX_PKT_BUF_SZ, DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | dev_kfree_skb_any(skb); |
Eric Dumazet | acfa9e9 | 2012-07-02 08:36:12 +0000 | [diff] [blame] | 690 | skb = alloc_skb(RX_PKT_BUF_SZ, GFP_ATOMIC | GFP_DMA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | if (skb == NULL) |
| 692 | return -ENOMEM; |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 693 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, |
| 694 | RX_PKT_BUF_SZ, |
| 695 | DMA_FROM_DEVICE); |
| 696 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || |
| 697 | mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) { |
| 698 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
| 699 | dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | dev_kfree_skb_any(skb); |
| 701 | return -ENOMEM; |
| 702 | } |
Eric Dumazet | a58c891 | 2009-01-15 15:29:35 -0800 | [diff] [blame] | 703 | bp->force_copybreak = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | } |
| 705 | |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 706 | rh = (struct rx_header *) skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | rh->len = 0; |
| 709 | rh->flags = 0; |
| 710 | |
| 711 | map->skb = skb; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 712 | map->mapping = mapping; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | if (src_map != NULL) |
| 715 | src_map->skb = NULL; |
| 716 | |
Felix Fietkau | 4ca8579 | 2009-01-09 02:39:57 +0000 | [diff] [blame] | 717 | ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | if (dest_idx == (B44_RX_RING_SIZE - 1)) |
| 719 | ctrl |= DESC_CTRL_EOT; |
| 720 | |
| 721 | dp = &bp->rx_ring[dest_idx]; |
| 722 | dp->ctrl = cpu_to_le32(ctrl); |
Felix Fietkau | 4ca8579 | 2009-01-09 02:39:57 +0000 | [diff] [blame] | 723 | dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 725 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 726 | b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma, |
Michael Buesch | 5d4d9e8 | 2009-04-03 00:01:30 +0000 | [diff] [blame] | 727 | dest_idx * sizeof(*dp), |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 728 | DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 729 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | return RX_PKT_BUF_SZ; |
| 731 | } |
| 732 | |
| 733 | static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) |
| 734 | { |
| 735 | struct dma_desc *src_desc, *dest_desc; |
| 736 | struct ring_info *src_map, *dest_map; |
| 737 | struct rx_header *rh; |
| 738 | int dest_idx; |
Al Viro | a7bed27 | 2007-01-29 15:36:54 -0500 | [diff] [blame] | 739 | __le32 ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | |
| 741 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); |
| 742 | dest_desc = &bp->rx_ring[dest_idx]; |
| 743 | dest_map = &bp->rx_buffers[dest_idx]; |
| 744 | src_desc = &bp->rx_ring[src_idx]; |
| 745 | src_map = &bp->rx_buffers[src_idx]; |
| 746 | |
| 747 | dest_map->skb = src_map->skb; |
| 748 | rh = (struct rx_header *) src_map->skb->data; |
| 749 | rh->len = 0; |
| 750 | rh->flags = 0; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 751 | dest_map->mapping = src_map->mapping; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 753 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 754 | b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma, |
Michael Buesch | 5d4d9e8 | 2009-04-03 00:01:30 +0000 | [diff] [blame] | 755 | src_idx * sizeof(*src_desc), |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 756 | DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | ctrl = src_desc->ctrl; |
| 759 | if (dest_idx == (B44_RX_RING_SIZE - 1)) |
| 760 | ctrl |= cpu_to_le32(DESC_CTRL_EOT); |
| 761 | else |
| 762 | ctrl &= cpu_to_le32(~DESC_CTRL_EOT); |
| 763 | |
| 764 | dest_desc->ctrl = ctrl; |
| 765 | dest_desc->addr = src_desc->addr; |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | src_map->skb = NULL; |
| 768 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 769 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 770 | b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma, |
Michael Buesch | 5d4d9e8 | 2009-04-03 00:01:30 +0000 | [diff] [blame] | 771 | dest_idx * sizeof(*dest_desc), |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 772 | DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 773 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 774 | dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping, |
| 775 | RX_PKT_BUF_SZ, |
| 776 | DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | static int b44_rx(struct b44 *bp, int budget) |
| 780 | { |
| 781 | int received; |
| 782 | u32 cons, prod; |
| 783 | |
| 784 | received = 0; |
| 785 | prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK; |
| 786 | prod /= sizeof(struct dma_desc); |
| 787 | cons = bp->rx_cons; |
| 788 | |
| 789 | while (cons != prod && budget > 0) { |
| 790 | struct ring_info *rp = &bp->rx_buffers[cons]; |
| 791 | struct sk_buff *skb = rp->skb; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 792 | dma_addr_t map = rp->mapping; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | struct rx_header *rh; |
| 794 | u16 len; |
| 795 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 796 | dma_sync_single_for_cpu(bp->sdev->dma_dev, map, |
| 797 | RX_PKT_BUF_SZ, |
| 798 | DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | rh = (struct rx_header *) skb->data; |
Al Viro | a7bed27 | 2007-01-29 15:36:54 -0500 | [diff] [blame] | 800 | len = le16_to_cpu(rh->len); |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 801 | if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) { |
| 803 | drop_it: |
| 804 | b44_recycle_rx(bp, cons, bp->rx_prod); |
| 805 | drop_it_no_recycle: |
Eric Dumazet | 553e233 | 2009-05-27 10:34:50 +0000 | [diff] [blame] | 806 | bp->dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | goto next_pkt; |
| 808 | } |
| 809 | |
| 810 | if (len == 0) { |
| 811 | int i = 0; |
| 812 | |
| 813 | do { |
| 814 | udelay(2); |
| 815 | barrier(); |
Al Viro | a7bed27 | 2007-01-29 15:36:54 -0500 | [diff] [blame] | 816 | len = le16_to_cpu(rh->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | } while (len == 0 && i++ < 5); |
| 818 | if (len == 0) |
| 819 | goto drop_it; |
| 820 | } |
| 821 | |
| 822 | /* Omit CRC. */ |
| 823 | len -= 4; |
| 824 | |
Eric Dumazet | a58c891 | 2009-01-15 15:29:35 -0800 | [diff] [blame] | 825 | if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | int skb_size; |
| 827 | skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod); |
| 828 | if (skb_size < 0) |
| 829 | goto drop_it; |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 830 | dma_unmap_single(bp->sdev->dma_dev, map, |
| 831 | skb_size, DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | /* Leave out rx_header */ |
Felix Fietkau | 4ca8579 | 2009-01-09 02:39:57 +0000 | [diff] [blame] | 833 | skb_put(skb, len + RX_PKT_OFFSET); |
| 834 | skb_pull(skb, RX_PKT_OFFSET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } else { |
| 836 | struct sk_buff *copy_skb; |
| 837 | |
| 838 | b44_recycle_rx(bp, cons, bp->rx_prod); |
Alexander Duyck | 45abfb1 | 2014-12-09 19:41:17 -0800 | [diff] [blame] | 839 | copy_skb = napi_alloc_skb(&bp->napi, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | if (copy_skb == NULL) |
| 841 | goto drop_it_no_recycle; |
| 842 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | skb_put(copy_skb, len); |
| 844 | /* DMA sync done above, copy just the actual packet */ |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 845 | skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET, |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 846 | copy_skb->data, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | skb = copy_skb; |
| 848 | } |
Eric Dumazet | bc8acf2 | 2010-09-02 13:07:41 -0700 | [diff] [blame] | 849 | skb_checksum_none_assert(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | skb->protocol = eth_type_trans(skb, bp->dev); |
| 851 | netif_receive_skb(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | received++; |
| 853 | budget--; |
| 854 | next_pkt: |
| 855 | bp->rx_prod = (bp->rx_prod + 1) & |
| 856 | (B44_RX_RING_SIZE - 1); |
| 857 | cons = (cons + 1) & (B44_RX_RING_SIZE - 1); |
| 858 | } |
| 859 | |
| 860 | bp->rx_cons = cons; |
| 861 | bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc)); |
| 862 | |
| 863 | return received; |
| 864 | } |
| 865 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 866 | static int b44_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 868 | struct b44 *bp = container_of(napi, struct b44, napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 869 | int work_done; |
Dongdong Deng | e99b1f0 | 2009-09-16 16:10:47 +0000 | [diff] [blame] | 870 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Dongdong Deng | e99b1f0 | 2009-09-16 16:10:47 +0000 | [diff] [blame] | 872 | spin_lock_irqsave(&bp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
| 874 | if (bp->istat & (ISTAT_TX | ISTAT_TO)) { |
| 875 | /* spin_lock(&bp->tx_lock); */ |
| 876 | b44_tx(bp); |
| 877 | /* spin_unlock(&bp->tx_lock); */ |
| 878 | } |
Mark Lord | 32737e9 | 2010-09-04 14:17:59 +0000 | [diff] [blame] | 879 | if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */ |
| 880 | bp->istat &= ~ISTAT_RFO; |
| 881 | b44_disable_ints(bp); |
| 882 | ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */ |
| 883 | b44_init_rings(bp); |
| 884 | b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); |
| 885 | netif_wake_queue(bp->dev); |
| 886 | } |
| 887 | |
Dongdong Deng | e99b1f0 | 2009-09-16 16:10:47 +0000 | [diff] [blame] | 888 | spin_unlock_irqrestore(&bp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 890 | work_done = 0; |
| 891 | if (bp->istat & ISTAT_RX) |
| 892 | work_done += b44_rx(bp, budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | |
| 894 | if (bp->istat & ISTAT_ERRORS) { |
Francois Romieu | d15e9c4 | 2006-12-17 23:03:15 +0100 | [diff] [blame] | 895 | spin_lock_irqsave(&bp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | b44_halt(bp); |
| 897 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 898 | b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | netif_wake_queue(bp->dev); |
Francois Romieu | d15e9c4 | 2006-12-17 23:03:15 +0100 | [diff] [blame] | 900 | spin_unlock_irqrestore(&bp->lock, flags); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 901 | work_done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 904 | if (work_done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 905 | napi_complete(napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | b44_enable_ints(bp); |
| 907 | } |
| 908 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 909 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | } |
| 911 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 912 | static irqreturn_t b44_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | { |
| 914 | struct net_device *dev = dev_id; |
| 915 | struct b44 *bp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | u32 istat, imask; |
| 917 | int handled = 0; |
| 918 | |
Francois Romieu | 65b984f | 2005-11-07 01:52:06 +0100 | [diff] [blame] | 919 | spin_lock(&bp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | istat = br32(bp, B44_ISTAT); |
| 922 | imask = br32(bp, B44_IMASK); |
| 923 | |
Johannes Berg | e78181f | 2006-11-06 23:17:20 +0100 | [diff] [blame] | 924 | /* The interrupt mask register controls which interrupt bits |
| 925 | * will actually raise an interrupt to the CPU when set by hw/firmware, |
| 926 | * but doesn't mask off the bits. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | */ |
| 928 | istat &= imask; |
| 929 | if (istat) { |
| 930 | handled = 1; |
Francois Romieu | ba5eec9 | 2005-11-08 23:37:12 +0100 | [diff] [blame] | 931 | |
| 932 | if (unlikely(!netif_running(dev))) { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 933 | netdev_info(dev, "late interrupt\n"); |
Francois Romieu | ba5eec9 | 2005-11-08 23:37:12 +0100 | [diff] [blame] | 934 | goto irq_ack; |
| 935 | } |
| 936 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 937 | if (napi_schedule_prep(&bp->napi)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | /* NOTE: These writes are posted by the readback of |
| 939 | * the ISTAT register below. |
| 940 | */ |
| 941 | bp->istat = istat; |
| 942 | __b44_disable_ints(bp); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 943 | __napi_schedule(&bp->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | } |
| 945 | |
Francois Romieu | ba5eec9 | 2005-11-08 23:37:12 +0100 | [diff] [blame] | 946 | irq_ack: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | bw32(bp, B44_ISTAT, istat); |
| 948 | br32(bp, B44_ISTAT); |
| 949 | } |
Francois Romieu | 65b984f | 2005-11-07 01:52:06 +0100 | [diff] [blame] | 950 | spin_unlock(&bp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | return IRQ_RETVAL(handled); |
| 952 | } |
| 953 | |
| 954 | static void b44_tx_timeout(struct net_device *dev) |
| 955 | { |
| 956 | struct b44 *bp = netdev_priv(dev); |
| 957 | |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 958 | netdev_err(dev, "transmit timed out, resetting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | spin_lock_irq(&bp->lock); |
| 961 | |
| 962 | b44_halt(bp); |
| 963 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 964 | b44_init_hw(bp, B44_FULL_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | spin_unlock_irq(&bp->lock); |
| 967 | |
| 968 | b44_enable_ints(bp); |
| 969 | |
| 970 | netif_wake_queue(dev); |
| 971 | } |
| 972 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 973 | static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | { |
| 975 | struct b44 *bp = netdev_priv(dev); |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 976 | int rc = NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | dma_addr_t mapping; |
| 978 | u32 len, entry, ctrl; |
Dongdong Deng | 22580f8 | 2009-08-13 19:12:31 +0000 | [diff] [blame] | 979 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
| 981 | len = skb->len; |
Dongdong Deng | 22580f8 | 2009-08-13 19:12:31 +0000 | [diff] [blame] | 982 | spin_lock_irqsave(&bp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | |
| 984 | /* This is a hard error, log it. */ |
| 985 | if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) { |
| 986 | netif_stop_queue(dev); |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 987 | netdev_err(dev, "BUG! Tx Ring full when queue awake!\n"); |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 988 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
| 990 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 991 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE); |
| 992 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) { |
Stephen Hemminger | f65a717 | 2007-06-04 13:25:38 -0700 | [diff] [blame] | 993 | struct sk_buff *bounce_skb; |
| 994 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | /* Chip can't handle DMA to/from >1GB, use bounce buffer */ |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 996 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
| 997 | dma_unmap_single(bp->sdev->dma_dev, mapping, len, |
Michael Buesch | f225763 | 2008-06-20 11:50:29 +0200 | [diff] [blame] | 998 | DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | |
Eric Dumazet | acfa9e9 | 2012-07-02 08:36:12 +0000 | [diff] [blame] | 1000 | bounce_skb = alloc_skb(len, GFP_ATOMIC | GFP_DMA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | if (!bounce_skb) |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 1002 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1004 | mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data, |
| 1005 | len, DMA_TO_DEVICE); |
| 1006 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) { |
| 1007 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
| 1008 | dma_unmap_single(bp->sdev->dma_dev, mapping, |
Michael Buesch | f225763 | 2008-06-20 11:50:29 +0200 | [diff] [blame] | 1009 | len, DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | dev_kfree_skb_any(bounce_skb); |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 1011 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | } |
| 1013 | |
Stephen Hemminger | f65a717 | 2007-06-04 13:25:38 -0700 | [diff] [blame] | 1014 | skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | dev_kfree_skb_any(skb); |
| 1016 | skb = bounce_skb; |
| 1017 | } |
| 1018 | |
| 1019 | entry = bp->tx_prod; |
| 1020 | bp->tx_buffers[entry].skb = skb; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1021 | bp->tx_buffers[entry].mapping = mapping; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | |
| 1023 | ctrl = (len & DESC_CTRL_LEN); |
| 1024 | ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF; |
| 1025 | if (entry == (B44_TX_RING_SIZE - 1)) |
| 1026 | ctrl |= DESC_CTRL_EOT; |
| 1027 | |
| 1028 | bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl); |
| 1029 | bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset); |
| 1030 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1031 | if (bp->flags & B44_FLAG_TX_RING_HACK) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1032 | b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma, |
| 1033 | entry * sizeof(bp->tx_ring[0]), |
| 1034 | DMA_TO_DEVICE); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1035 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | entry = NEXT_TX(entry); |
| 1037 | |
| 1038 | bp->tx_prod = entry; |
| 1039 | |
| 1040 | wmb(); |
| 1041 | |
| 1042 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); |
| 1043 | if (bp->flags & B44_FLAG_BUGGY_TXPTR) |
| 1044 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); |
| 1045 | if (bp->flags & B44_FLAG_REORDER_BUG) |
| 1046 | br32(bp, B44_DMATX_PTR); |
| 1047 | |
Hauke Mehrtens | 5055544 | 2013-09-28 23:22:18 +0200 | [diff] [blame] | 1048 | netdev_sent_queue(dev, skb->len); |
| 1049 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | if (TX_BUFFS_AVAIL(bp) < 1) |
| 1051 | netif_stop_queue(dev); |
| 1052 | |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 1053 | out_unlock: |
Dongdong Deng | 22580f8 | 2009-08-13 19:12:31 +0000 | [diff] [blame] | 1054 | spin_unlock_irqrestore(&bp->lock, flags); |
Francois Romieu | c719369 | 2005-11-07 01:50:03 +0100 | [diff] [blame] | 1055 | |
| 1056 | return rc; |
| 1057 | |
| 1058 | err_out: |
| 1059 | rc = NETDEV_TX_BUSY; |
| 1060 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | static int b44_change_mtu(struct net_device *dev, int new_mtu) |
| 1064 | { |
| 1065 | struct b44 *bp = netdev_priv(dev); |
| 1066 | |
| 1067 | if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU) |
| 1068 | return -EINVAL; |
| 1069 | |
| 1070 | if (!netif_running(dev)) { |
| 1071 | /* We'll just catch it later when the |
| 1072 | * device is up'd. |
| 1073 | */ |
| 1074 | dev->mtu = new_mtu; |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
| 1078 | spin_lock_irq(&bp->lock); |
| 1079 | b44_halt(bp); |
| 1080 | dev->mtu = new_mtu; |
| 1081 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1082 | b44_init_hw(bp, B44_FULL_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | spin_unlock_irq(&bp->lock); |
| 1084 | |
| 1085 | b44_enable_ints(bp); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 1086 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | return 0; |
| 1088 | } |
| 1089 | |
| 1090 | /* Free up pending packets in all rx/tx rings. |
| 1091 | * |
| 1092 | * The chip has been shut down and the driver detached from |
| 1093 | * the networking, so no interrupts or new tx packets will |
| 1094 | * end up in the driver. bp->lock is not held and we are not |
| 1095 | * in an interrupt context and thus may sleep. |
| 1096 | */ |
| 1097 | static void b44_free_rings(struct b44 *bp) |
| 1098 | { |
| 1099 | struct ring_info *rp; |
| 1100 | int i; |
| 1101 | |
| 1102 | for (i = 0; i < B44_RX_RING_SIZE; i++) { |
| 1103 | rp = &bp->rx_buffers[i]; |
| 1104 | |
| 1105 | if (rp->skb == NULL) |
| 1106 | continue; |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1107 | dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ, |
| 1108 | DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | dev_kfree_skb_any(rp->skb); |
| 1110 | rp->skb = NULL; |
| 1111 | } |
| 1112 | |
| 1113 | /* XXX needs changes once NETIF_F_SG is set... */ |
| 1114 | for (i = 0; i < B44_TX_RING_SIZE; i++) { |
| 1115 | rp = &bp->tx_buffers[i]; |
| 1116 | |
| 1117 | if (rp->skb == NULL) |
| 1118 | continue; |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1119 | dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len, |
| 1120 | DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | dev_kfree_skb_any(rp->skb); |
| 1122 | rp->skb = NULL; |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | /* Initialize tx/rx rings for packet processing. |
| 1127 | * |
| 1128 | * The chip has been shut down and the driver detached from |
| 1129 | * the networking, so no interrupts or new tx packets will |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1130 | * end up in the driver. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | */ |
| 1132 | static void b44_init_rings(struct b44 *bp) |
| 1133 | { |
| 1134 | int i; |
| 1135 | |
| 1136 | b44_free_rings(bp); |
| 1137 | |
| 1138 | memset(bp->rx_ring, 0, B44_RX_RING_BYTES); |
| 1139 | memset(bp->tx_ring, 0, B44_TX_RING_BYTES); |
| 1140 | |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1141 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1142 | dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma, |
| 1143 | DMA_TABLE_BYTES, DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1144 | |
| 1145 | if (bp->flags & B44_FLAG_TX_RING_HACK) |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1146 | dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma, |
| 1147 | DMA_TABLE_BYTES, DMA_TO_DEVICE); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | for (i = 0; i < bp->rx_pending; i++) { |
| 1150 | if (b44_alloc_rx_skb(bp, -1, i) < 0) |
| 1151 | break; |
| 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | /* |
| 1156 | * Must not be invoked with interrupt sources disabled and |
| 1157 | * the hardware shutdown down. |
| 1158 | */ |
| 1159 | static void b44_free_consistent(struct b44 *bp) |
| 1160 | { |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 1161 | kfree(bp->rx_buffers); |
| 1162 | bp->rx_buffers = NULL; |
| 1163 | kfree(bp->tx_buffers); |
| 1164 | bp->tx_buffers = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | if (bp->rx_ring) { |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1166 | if (bp->flags & B44_FLAG_RX_RING_HACK) { |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1167 | dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma, |
| 1168 | DMA_TABLE_BYTES, DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1169 | kfree(bp->rx_ring); |
| 1170 | } else |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1171 | dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES, |
| 1172 | bp->rx_ring, bp->rx_ring_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | bp->rx_ring = NULL; |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1174 | bp->flags &= ~B44_FLAG_RX_RING_HACK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | } |
| 1176 | if (bp->tx_ring) { |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1177 | if (bp->flags & B44_FLAG_TX_RING_HACK) { |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1178 | dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma, |
| 1179 | DMA_TABLE_BYTES, DMA_TO_DEVICE); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1180 | kfree(bp->tx_ring); |
| 1181 | } else |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1182 | dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES, |
| 1183 | bp->tx_ring, bp->tx_ring_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | bp->tx_ring = NULL; |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1185 | bp->flags &= ~B44_FLAG_TX_RING_HACK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | /* |
| 1190 | * Must not be invoked with interrupt sources disabled and |
| 1191 | * the hardware shutdown down. Can sleep. |
| 1192 | */ |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1193 | static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
| 1195 | int size; |
| 1196 | |
| 1197 | size = B44_RX_RING_SIZE * sizeof(struct ring_info); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1198 | bp->rx_buffers = kzalloc(size, gfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | if (!bp->rx_buffers) |
| 1200 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | |
| 1202 | size = B44_TX_RING_SIZE * sizeof(struct ring_info); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1203 | bp->tx_buffers = kzalloc(size, gfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | if (!bp->tx_buffers) |
| 1205 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | |
| 1207 | size = DMA_TABLE_BYTES; |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1208 | bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size, |
| 1209 | &bp->rx_ring_dma, gfp); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1210 | if (!bp->rx_ring) { |
| 1211 | /* Allocation may have failed due to pci_alloc_consistent |
| 1212 | insisting on use of GFP_DMA, which is more restrictive |
| 1213 | than necessary... */ |
| 1214 | struct dma_desc *rx_ring; |
| 1215 | dma_addr_t rx_ring_dma; |
| 1216 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1217 | rx_ring = kzalloc(size, gfp); |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1218 | if (!rx_ring) |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1219 | goto out_err; |
| 1220 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1221 | rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring, |
| 1222 | DMA_TABLE_BYTES, |
| 1223 | DMA_BIDIRECTIONAL); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1224 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1225 | if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) || |
Yang Hongyang | 28b7679 | 2009-04-06 19:01:17 -0700 | [diff] [blame] | 1226 | rx_ring_dma + size > DMA_BIT_MASK(30)) { |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1227 | kfree(rx_ring); |
| 1228 | goto out_err; |
| 1229 | } |
| 1230 | |
| 1231 | bp->rx_ring = rx_ring; |
| 1232 | bp->rx_ring_dma = rx_ring_dma; |
| 1233 | bp->flags |= B44_FLAG_RX_RING_HACK; |
| 1234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1236 | bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size, |
| 1237 | &bp->tx_ring_dma, gfp); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1238 | if (!bp->tx_ring) { |
Michael Buesch | f225763 | 2008-06-20 11:50:29 +0200 | [diff] [blame] | 1239 | /* Allocation may have failed due to ssb_dma_alloc_consistent |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1240 | insisting on use of GFP_DMA, which is more restrictive |
| 1241 | than necessary... */ |
| 1242 | struct dma_desc *tx_ring; |
| 1243 | dma_addr_t tx_ring_dma; |
| 1244 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1245 | tx_ring = kzalloc(size, gfp); |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1246 | if (!tx_ring) |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1247 | goto out_err; |
| 1248 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1249 | tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring, |
| 1250 | DMA_TABLE_BYTES, |
| 1251 | DMA_TO_DEVICE); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1252 | |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 1253 | if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) || |
Yang Hongyang | 28b7679 | 2009-04-06 19:01:17 -0700 | [diff] [blame] | 1254 | tx_ring_dma + size > DMA_BIT_MASK(30)) { |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 1255 | kfree(tx_ring); |
| 1256 | goto out_err; |
| 1257 | } |
| 1258 | |
| 1259 | bp->tx_ring = tx_ring; |
| 1260 | bp->tx_ring_dma = tx_ring_dma; |
| 1261 | bp->flags |= B44_FLAG_TX_RING_HACK; |
| 1262 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | |
| 1264 | return 0; |
| 1265 | |
| 1266 | out_err: |
| 1267 | b44_free_consistent(bp); |
| 1268 | return -ENOMEM; |
| 1269 | } |
| 1270 | |
| 1271 | /* bp->lock is held. */ |
| 1272 | static void b44_clear_stats(struct b44 *bp) |
| 1273 | { |
| 1274 | unsigned long reg; |
| 1275 | |
| 1276 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); |
| 1277 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) |
| 1278 | br32(bp, reg); |
| 1279 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) |
| 1280 | br32(bp, reg); |
| 1281 | } |
| 1282 | |
| 1283 | /* bp->lock is held. */ |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1284 | static void b44_chip_reset(struct b44 *bp, int reset_kind) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1286 | struct ssb_device *sdev = bp->sdev; |
Michael Buesch | f8af11a | 2009-02-26 22:33:00 -0800 | [diff] [blame] | 1287 | bool was_enabled; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1288 | |
Michael Buesch | f8af11a | 2009-02-26 22:33:00 -0800 | [diff] [blame] | 1289 | was_enabled = ssb_device_is_enabled(bp->sdev); |
| 1290 | |
| 1291 | ssb_device_enable(bp->sdev, 0); |
| 1292 | ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev); |
| 1293 | |
| 1294 | if (was_enabled) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | bw32(bp, B44_RCV_LAZY, 0); |
| 1296 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE); |
Gary Zambrano | 40ee8c7 | 2007-02-16 13:27:27 -0800 | [diff] [blame] | 1297 | b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | bw32(bp, B44_DMATX_CTRL, 0); |
| 1299 | bp->tx_prod = bp->tx_cons = 0; |
| 1300 | if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) { |
| 1301 | b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE, |
| 1302 | 100, 0); |
| 1303 | } |
| 1304 | bw32(bp, B44_DMARX_CTRL, 0); |
| 1305 | bp->rx_prod = bp->rx_cons = 0; |
Michael Buesch | f8af11a | 2009-02-26 22:33:00 -0800 | [diff] [blame] | 1306 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | b44_clear_stats(bp); |
| 1309 | |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1310 | /* |
| 1311 | * Don't enable PHY if we are doing a partial reset |
| 1312 | * we are probably going to power down |
| 1313 | */ |
| 1314 | if (reset_kind == B44_CHIP_RESET_PARTIAL) |
| 1315 | return; |
| 1316 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1317 | switch (sdev->bus->bustype) { |
| 1318 | case SSB_BUSTYPE_SSB: |
| 1319 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | |
Julia Lawall | 39506a5 | 2009-08-01 09:51:06 +0000 | [diff] [blame] | 1320 | (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus), |
| 1321 | B44_MDC_RATIO) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1322 | & MDIO_CTRL_MAXF_MASK))); |
| 1323 | break; |
| 1324 | case SSB_BUSTYPE_PCI: |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1325 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | |
| 1326 | (0x0d & MDIO_CTRL_MAXF_MASK))); |
| 1327 | break; |
Michael Buesch | 98a1e2a | 2009-09-08 19:33:31 +0200 | [diff] [blame] | 1328 | case SSB_BUSTYPE_PCMCIA: |
| 1329 | case SSB_BUSTYPE_SDIO: |
| 1330 | WARN_ON(1); /* A device with this bus does not exist. */ |
| 1331 | break; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1332 | } |
| 1333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | br32(bp, B44_MDIO_CTRL); |
| 1335 | |
| 1336 | if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) { |
| 1337 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL); |
| 1338 | br32(bp, B44_ENET_CTRL); |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 1339 | bp->flags |= B44_FLAG_EXTERNAL_PHY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | } else { |
| 1341 | u32 val = br32(bp, B44_DEVCTRL); |
| 1342 | |
| 1343 | if (val & DEVCTRL_EPR) { |
| 1344 | bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR)); |
| 1345 | br32(bp, B44_DEVCTRL); |
| 1346 | udelay(100); |
| 1347 | } |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 1348 | bp->flags &= ~B44_FLAG_EXTERNAL_PHY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | } |
| 1350 | } |
| 1351 | |
| 1352 | /* bp->lock is held. */ |
| 1353 | static void b44_halt(struct b44 *bp) |
| 1354 | { |
| 1355 | b44_disable_ints(bp); |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1356 | /* reset PHY */ |
| 1357 | b44_phy_reset(bp); |
| 1358 | /* power down PHY */ |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 1359 | netdev_info(bp->dev, "powering down PHY\n"); |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1360 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN); |
| 1361 | /* now reset the chip, but without enabling the MAC&PHY |
| 1362 | * part of it. This has to be done _after_ we shut down the PHY */ |
Hauke Mehrtens | bea69c4 | 2013-12-20 02:16:11 +0100 | [diff] [blame] | 1363 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
| 1364 | b44_chip_reset(bp, B44_CHIP_RESET_FULL); |
| 1365 | else |
| 1366 | b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | /* bp->lock is held. */ |
| 1370 | static void __b44_set_mac_addr(struct b44 *bp) |
| 1371 | { |
| 1372 | bw32(bp, B44_CAM_CTRL, 0); |
| 1373 | if (!(bp->dev->flags & IFF_PROMISC)) { |
| 1374 | u32 val; |
| 1375 | |
| 1376 | __b44_cam_write(bp, bp->dev->dev_addr, 0); |
| 1377 | val = br32(bp, B44_CAM_CTRL); |
| 1378 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | static int b44_set_mac_addr(struct net_device *dev, void *p) |
| 1383 | { |
| 1384 | struct b44 *bp = netdev_priv(dev); |
| 1385 | struct sockaddr *addr = p; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1386 | u32 val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
| 1388 | if (netif_running(dev)) |
| 1389 | return -EBUSY; |
| 1390 | |
Gary Zambrano | 391fc09 | 2006-03-28 14:57:38 -0800 | [diff] [blame] | 1391 | if (!is_valid_ether_addr(addr->sa_data)) |
| 1392 | return -EINVAL; |
| 1393 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 1395 | |
| 1396 | spin_lock_irq(&bp->lock); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1397 | |
| 1398 | val = br32(bp, B44_RXCONFIG); |
| 1399 | if (!(val & RXCONFIG_CAM_ABSENT)) |
| 1400 | __b44_set_mac_addr(bp); |
| 1401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | spin_unlock_irq(&bp->lock); |
| 1403 | |
| 1404 | return 0; |
| 1405 | } |
| 1406 | |
| 1407 | /* Called at device open time to get the chip ready for |
| 1408 | * packet processing. Invoked with bp->lock held. |
| 1409 | */ |
| 1410 | static void __b44_set_rx_mode(struct net_device *); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1411 | static void b44_init_hw(struct b44 *bp, int reset_kind) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | { |
| 1413 | u32 val; |
| 1414 | |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1415 | b44_chip_reset(bp, B44_CHIP_RESET_FULL); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1416 | if (reset_kind == B44_FULL_RESET) { |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1417 | b44_phy_reset(bp); |
| 1418 | b44_setup_phy(bp); |
| 1419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | |
| 1421 | /* Enable CRC32, set proper LED modes and power on PHY */ |
| 1422 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL); |
| 1423 | bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT)); |
| 1424 | |
| 1425 | /* This sets the MAC address too. */ |
| 1426 | __b44_set_rx_mode(bp->dev); |
| 1427 | |
| 1428 | /* MTU + eth header + possible VLAN tag + struct rx_header */ |
| 1429 | bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); |
| 1430 | bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); |
| 1431 | |
| 1432 | bw32(bp, B44_TX_WMARK, 56); /* XXX magic */ |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1433 | if (reset_kind == B44_PARTIAL_RESET) { |
| 1434 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 1435 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1436 | } else { |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1437 | bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE); |
| 1438 | bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset); |
| 1439 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | |
Stephen Hemminger | 72f4861 | 2007-06-04 13:25:39 -0700 | [diff] [blame] | 1440 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1441 | bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1443 | bw32(bp, B44_DMARX_PTR, bp->rx_pending); |
| 1444 | bp->rx_prod = bp->rx_pending; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1446 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); |
Gary Zambrano | 00e8b3a | 2006-06-20 15:34:26 -0700 | [diff] [blame] | 1447 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | |
| 1449 | val = br32(bp, B44_ENET_CTRL); |
| 1450 | bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE)); |
Hauke Mehrtens | 5055544 | 2013-09-28 23:22:18 +0200 | [diff] [blame] | 1451 | |
| 1452 | netdev_reset_queue(bp->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | } |
| 1454 | |
| 1455 | static int b44_open(struct net_device *dev) |
| 1456 | { |
| 1457 | struct b44 *bp = netdev_priv(dev); |
| 1458 | int err; |
| 1459 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1460 | err = b44_alloc_consistent(bp, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | if (err) |
Francois Romieu | 6c2f426 | 2005-11-07 01:52:57 +0100 | [diff] [blame] | 1462 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1464 | napi_enable(&bp->napi); |
| 1465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1467 | b44_init_hw(bp, B44_FULL_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
John W. Linville | e254e9b | 2005-06-08 15:11:57 -0400 | [diff] [blame] | 1469 | b44_check_phy(bp); |
| 1470 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 1471 | err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
Francois Romieu | 6c2f426 | 2005-11-07 01:52:57 +0100 | [diff] [blame] | 1472 | if (unlikely(err < 0)) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1473 | napi_disable(&bp->napi); |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 1474 | b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL); |
Francois Romieu | 6c2f426 | 2005-11-07 01:52:57 +0100 | [diff] [blame] | 1475 | b44_free_rings(bp); |
| 1476 | b44_free_consistent(bp); |
| 1477 | goto out; |
| 1478 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | |
| 1480 | init_timer(&bp->timer); |
| 1481 | bp->timer.expires = jiffies + HZ; |
| 1482 | bp->timer.data = (unsigned long) bp; |
| 1483 | bp->timer.function = b44_timer; |
| 1484 | add_timer(&bp->timer); |
| 1485 | |
| 1486 | b44_enable_ints(bp); |
Hauke Mehrtens | 25d54fe | 2014-03-02 17:29:33 +0100 | [diff] [blame] | 1487 | |
| 1488 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
| 1489 | phy_start(bp->phydev); |
| 1490 | |
Mark Lord | d9e2d18 | 2005-11-30 22:30:23 +0100 | [diff] [blame] | 1491 | netif_start_queue(dev); |
Francois Romieu | 6c2f426 | 2005-11-07 01:52:57 +0100 | [diff] [blame] | 1492 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | return err; |
| 1494 | } |
| 1495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1497 | /* |
| 1498 | * Polling receive - used by netconsole and other diagnostic tools |
| 1499 | * to allow network i/o with interrupts disabled. |
| 1500 | */ |
| 1501 | static void b44_poll_controller(struct net_device *dev) |
| 1502 | { |
| 1503 | disable_irq(dev->irq); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1504 | b44_interrupt(dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | enable_irq(dev->irq); |
| 1506 | } |
| 1507 | #endif |
| 1508 | |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1509 | static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset) |
| 1510 | { |
| 1511 | u32 i; |
| 1512 | u32 *pattern = (u32 *) pp; |
| 1513 | |
| 1514 | for (i = 0; i < bytes; i += sizeof(u32)) { |
| 1515 | bw32(bp, B44_FILT_ADDR, table_offset + i); |
| 1516 | bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]); |
| 1517 | } |
| 1518 | } |
| 1519 | |
| 1520 | static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset) |
| 1521 | { |
| 1522 | int magicsync = 6; |
| 1523 | int k, j, len = offset; |
| 1524 | int ethaddr_bytes = ETH_ALEN; |
| 1525 | |
| 1526 | memset(ppattern + offset, 0xff, magicsync); |
| 1527 | for (j = 0; j < magicsync; j++) |
| 1528 | set_bit(len++, (unsigned long *) pmask); |
| 1529 | |
| 1530 | for (j = 0; j < B44_MAX_PATTERNS; j++) { |
| 1531 | if ((B44_PATTERN_SIZE - len) >= ETH_ALEN) |
| 1532 | ethaddr_bytes = ETH_ALEN; |
| 1533 | else |
| 1534 | ethaddr_bytes = B44_PATTERN_SIZE - len; |
| 1535 | if (ethaddr_bytes <=0) |
| 1536 | break; |
| 1537 | for (k = 0; k< ethaddr_bytes; k++) { |
| 1538 | ppattern[offset + magicsync + |
| 1539 | (j * ETH_ALEN) + k] = macaddr[k]; |
Stanislav Brabec | e018882 | 2009-12-08 21:00:22 -0800 | [diff] [blame] | 1540 | set_bit(len++, (unsigned long *) pmask); |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1541 | } |
| 1542 | } |
| 1543 | return len - 1; |
| 1544 | } |
| 1545 | |
| 1546 | /* Setup magic packet patterns in the b44 WOL |
| 1547 | * pattern matching filter. |
| 1548 | */ |
| 1549 | static void b44_setup_pseudo_magicp(struct b44 *bp) |
| 1550 | { |
| 1551 | |
| 1552 | u32 val; |
| 1553 | int plen0, plen1, plen2; |
| 1554 | u8 *pwol_pattern; |
| 1555 | u8 pwol_mask[B44_PMASK_SIZE]; |
| 1556 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 1557 | pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL); |
Joe Perches | b2adaca | 2013-02-03 17:43:58 +0000 | [diff] [blame] | 1558 | if (!pwol_pattern) |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1559 | return; |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1560 | |
| 1561 | /* Ipv4 magic packet pattern - pattern 0.*/ |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1562 | memset(pwol_mask, 0, B44_PMASK_SIZE); |
| 1563 | plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, |
| 1564 | B44_ETHIPV4UDP_HLEN); |
| 1565 | |
| 1566 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE); |
| 1567 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE); |
| 1568 | |
| 1569 | /* Raw ethernet II magic packet pattern - pattern 1 */ |
| 1570 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); |
| 1571 | memset(pwol_mask, 0, B44_PMASK_SIZE); |
| 1572 | plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, |
| 1573 | ETH_HLEN); |
| 1574 | |
| 1575 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, |
| 1576 | B44_PATTERN_BASE + B44_PATTERN_SIZE); |
| 1577 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, |
| 1578 | B44_PMASK_BASE + B44_PMASK_SIZE); |
| 1579 | |
| 1580 | /* Ipv6 magic packet pattern - pattern 2 */ |
| 1581 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); |
| 1582 | memset(pwol_mask, 0, B44_PMASK_SIZE); |
| 1583 | plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, |
| 1584 | B44_ETHIPV6UDP_HLEN); |
| 1585 | |
| 1586 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, |
| 1587 | B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE); |
| 1588 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, |
| 1589 | B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE); |
| 1590 | |
| 1591 | kfree(pwol_pattern); |
| 1592 | |
| 1593 | /* set these pattern's lengths: one less than each real length */ |
| 1594 | val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE; |
| 1595 | bw32(bp, B44_WKUP_LEN, val); |
| 1596 | |
| 1597 | /* enable wakeup pattern matching */ |
| 1598 | val = br32(bp, B44_DEVCTRL); |
| 1599 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE); |
| 1600 | |
| 1601 | } |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1602 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1603 | #ifdef CONFIG_B44_PCI |
| 1604 | static void b44_setup_wol_pci(struct b44 *bp) |
| 1605 | { |
| 1606 | u16 val; |
| 1607 | |
| 1608 | if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) { |
| 1609 | bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE); |
| 1610 | pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val); |
| 1611 | pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE); |
| 1612 | } |
| 1613 | } |
| 1614 | #else |
| 1615 | static inline void b44_setup_wol_pci(struct b44 *bp) { } |
| 1616 | #endif /* CONFIG_B44_PCI */ |
| 1617 | |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1618 | static void b44_setup_wol(struct b44 *bp) |
| 1619 | { |
| 1620 | u32 val; |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1621 | |
| 1622 | bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI); |
| 1623 | |
| 1624 | if (bp->flags & B44_FLAG_B0_ANDLATER) { |
| 1625 | |
| 1626 | bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE); |
| 1627 | |
| 1628 | val = bp->dev->dev_addr[2] << 24 | |
| 1629 | bp->dev->dev_addr[3] << 16 | |
| 1630 | bp->dev->dev_addr[4] << 8 | |
| 1631 | bp->dev->dev_addr[5]; |
| 1632 | bw32(bp, B44_ADDR_LO, val); |
| 1633 | |
| 1634 | val = bp->dev->dev_addr[0] << 8 | |
| 1635 | bp->dev->dev_addr[1]; |
| 1636 | bw32(bp, B44_ADDR_HI, val); |
| 1637 | |
| 1638 | val = br32(bp, B44_DEVCTRL); |
| 1639 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE); |
| 1640 | |
Gary Zambrano | 725ad80 | 2006-06-20 15:34:36 -0700 | [diff] [blame] | 1641 | } else { |
| 1642 | b44_setup_pseudo_magicp(bp); |
| 1643 | } |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1644 | b44_setup_wol_pci(bp); |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1645 | } |
| 1646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | static int b44_close(struct net_device *dev) |
| 1648 | { |
| 1649 | struct b44 *bp = netdev_priv(dev); |
| 1650 | |
| 1651 | netif_stop_queue(dev); |
| 1652 | |
Hauke Mehrtens | 25d54fe | 2014-03-02 17:29:33 +0100 | [diff] [blame] | 1653 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
| 1654 | phy_stop(bp->phydev); |
| 1655 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1656 | napi_disable(&bp->napi); |
Francois Romieu | ba5eec9 | 2005-11-08 23:37:12 +0100 | [diff] [blame] | 1657 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | del_timer_sync(&bp->timer); |
| 1659 | |
| 1660 | spin_lock_irq(&bp->lock); |
| 1661 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | b44_halt(bp); |
| 1663 | b44_free_rings(bp); |
Stephen Hemminger | c35ca39 | 2006-01-20 21:13:17 -0800 | [diff] [blame] | 1664 | netif_carrier_off(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | |
| 1666 | spin_unlock_irq(&bp->lock); |
| 1667 | |
| 1668 | free_irq(dev->irq, dev); |
| 1669 | |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1670 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1671 | b44_init_hw(bp, B44_PARTIAL_RESET); |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 1672 | b44_setup_wol(bp); |
| 1673 | } |
| 1674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | b44_free_consistent(bp); |
| 1676 | |
| 1677 | return 0; |
| 1678 | } |
| 1679 | |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1680 | static struct rtnl_link_stats64 *b44_get_stats64(struct net_device *dev, |
| 1681 | struct rtnl_link_stats64 *nstat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | { |
| 1683 | struct b44 *bp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | struct b44_hw_stats *hwstat = &bp->hw_stats; |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1685 | unsigned int start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1687 | do { |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 1688 | start = u64_stats_fetch_begin_irq(&hwstat->syncp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1690 | /* Convert HW stats into rtnl_link_stats64 stats. */ |
| 1691 | nstat->rx_packets = hwstat->rx_pkts; |
| 1692 | nstat->tx_packets = hwstat->tx_pkts; |
| 1693 | nstat->rx_bytes = hwstat->rx_octets; |
| 1694 | nstat->tx_bytes = hwstat->tx_octets; |
| 1695 | nstat->tx_errors = (hwstat->tx_jabber_pkts + |
| 1696 | hwstat->tx_oversize_pkts + |
| 1697 | hwstat->tx_underruns + |
| 1698 | hwstat->tx_excessive_cols + |
| 1699 | hwstat->tx_late_cols); |
Mark Einon | 0bc9b73 | 2014-09-11 23:19:49 +0100 | [diff] [blame] | 1700 | nstat->multicast = hwstat->rx_multicast_pkts; |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1701 | nstat->collisions = hwstat->tx_total_cols; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1703 | nstat->rx_length_errors = (hwstat->rx_oversize_pkts + |
| 1704 | hwstat->rx_undersize); |
| 1705 | nstat->rx_over_errors = hwstat->rx_missed_pkts; |
| 1706 | nstat->rx_frame_errors = hwstat->rx_align_errs; |
| 1707 | nstat->rx_crc_errors = hwstat->rx_crc_errs; |
| 1708 | nstat->rx_errors = (hwstat->rx_jabber_pkts + |
| 1709 | hwstat->rx_oversize_pkts + |
| 1710 | hwstat->rx_missed_pkts + |
| 1711 | hwstat->rx_crc_align_errs + |
| 1712 | hwstat->rx_undersize + |
| 1713 | hwstat->rx_crc_errs + |
| 1714 | hwstat->rx_align_errs + |
| 1715 | hwstat->rx_symbol_errs); |
| 1716 | |
| 1717 | nstat->tx_aborted_errors = hwstat->tx_underruns; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | #if 0 |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 1719 | /* Carrier lost counter seems to be broken for some devices */ |
| 1720 | nstat->tx_carrier_errors = hwstat->tx_carrier_lost; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | #endif |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 1722 | } while (u64_stats_fetch_retry_irq(&hwstat->syncp, start)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | |
| 1724 | return nstat; |
| 1725 | } |
| 1726 | |
| 1727 | static int __b44_load_mcast(struct b44 *bp, struct net_device *dev) |
| 1728 | { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1729 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | int i, num_ents; |
| 1731 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1732 | num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE); |
Jiri Pirko | 0ddf477 | 2010-02-20 00:13:58 +0000 | [diff] [blame] | 1733 | i = 0; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1734 | netdev_for_each_mc_addr(ha, dev) { |
Jiri Pirko | 0ddf477 | 2010-02-20 00:13:58 +0000 | [diff] [blame] | 1735 | if (i == num_ents) |
| 1736 | break; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1737 | __b44_cam_write(bp, ha->addr, i++ + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | return i+1; |
| 1740 | } |
| 1741 | |
| 1742 | static void __b44_set_rx_mode(struct net_device *dev) |
| 1743 | { |
| 1744 | struct b44 *bp = netdev_priv(dev); |
| 1745 | u32 val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | |
| 1747 | val = br32(bp, B44_RXCONFIG); |
| 1748 | val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1749 | if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | val |= RXCONFIG_PROMISC; |
| 1751 | bw32(bp, B44_RXCONFIG, val); |
| 1752 | } else { |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1753 | unsigned char zero[6] = {0, 0, 0, 0, 0, 0}; |
Bill Helfinstine | cda22aa | 2007-04-01 13:10:28 -0400 | [diff] [blame] | 1754 | int i = 1; |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1755 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | __b44_set_mac_addr(bp); |
| 1757 | |
Jeff Garzik | 2f614fe | 2006-10-05 07:10:38 -0400 | [diff] [blame] | 1758 | if ((dev->flags & IFF_ALLMULTI) || |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1759 | (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | val |= RXCONFIG_ALLMULTI; |
| 1761 | else |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 1762 | i = __b44_load_mcast(bp, dev); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 1763 | |
Jeff Garzik | 2f614fe | 2006-10-05 07:10:38 -0400 | [diff] [blame] | 1764 | for (; i < 64; i++) |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 1765 | __b44_cam_write(bp, zero, i); |
Jeff Garzik | 2f614fe | 2006-10-05 07:10:38 -0400 | [diff] [blame] | 1766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | bw32(bp, B44_RXCONFIG, val); |
| 1768 | val = br32(bp, B44_CAM_CTRL); |
| 1769 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); |
| 1770 | } |
| 1771 | } |
| 1772 | |
| 1773 | static void b44_set_rx_mode(struct net_device *dev) |
| 1774 | { |
| 1775 | struct b44 *bp = netdev_priv(dev); |
| 1776 | |
| 1777 | spin_lock_irq(&bp->lock); |
| 1778 | __b44_set_rx_mode(dev); |
| 1779 | spin_unlock_irq(&bp->lock); |
| 1780 | } |
| 1781 | |
| 1782 | static u32 b44_get_msglevel(struct net_device *dev) |
| 1783 | { |
| 1784 | struct b44 *bp = netdev_priv(dev); |
| 1785 | return bp->msg_enable; |
| 1786 | } |
| 1787 | |
| 1788 | static void b44_set_msglevel(struct net_device *dev, u32 value) |
| 1789 | { |
| 1790 | struct b44 *bp = netdev_priv(dev); |
| 1791 | bp->msg_enable = value; |
| 1792 | } |
| 1793 | |
| 1794 | static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) |
| 1795 | { |
| 1796 | struct b44 *bp = netdev_priv(dev); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1797 | struct ssb_bus *bus = bp->sdev->bus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | |
roel kluin | 27e0955 | 2009-07-17 08:01:54 +0000 | [diff] [blame] | 1799 | strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); |
| 1800 | strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version)); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1801 | switch (bus->bustype) { |
| 1802 | case SSB_BUSTYPE_PCI: |
roel kluin | 27e0955 | 2009-07-17 08:01:54 +0000 | [diff] [blame] | 1803 | strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info)); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1804 | break; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1805 | case SSB_BUSTYPE_SSB: |
roel kluin | 27e0955 | 2009-07-17 08:01:54 +0000 | [diff] [blame] | 1806 | strlcpy(info->bus_info, "SSB", sizeof(info->bus_info)); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1807 | break; |
Michael Buesch | 98a1e2a | 2009-09-08 19:33:31 +0200 | [diff] [blame] | 1808 | case SSB_BUSTYPE_PCMCIA: |
| 1809 | case SSB_BUSTYPE_SDIO: |
| 1810 | WARN_ON(1); /* A device with this bus does not exist. */ |
| 1811 | break; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 1812 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | } |
| 1814 | |
| 1815 | static int b44_nway_reset(struct net_device *dev) |
| 1816 | { |
| 1817 | struct b44 *bp = netdev_priv(dev); |
| 1818 | u32 bmcr; |
| 1819 | int r; |
| 1820 | |
| 1821 | spin_lock_irq(&bp->lock); |
| 1822 | b44_readphy(bp, MII_BMCR, &bmcr); |
| 1823 | b44_readphy(bp, MII_BMCR, &bmcr); |
| 1824 | r = -EINVAL; |
| 1825 | if (bmcr & BMCR_ANENABLE) { |
| 1826 | b44_writephy(bp, MII_BMCR, |
| 1827 | bmcr | BMCR_ANRESTART); |
| 1828 | r = 0; |
| 1829 | } |
| 1830 | spin_unlock_irq(&bp->lock); |
| 1831 | |
| 1832 | return r; |
| 1833 | } |
| 1834 | |
| 1835 | static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1836 | { |
| 1837 | struct b44 *bp = netdev_priv(dev); |
| 1838 | |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 1839 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) { |
| 1840 | BUG_ON(!bp->phydev); |
| 1841 | return phy_ethtool_gset(bp->phydev, cmd); |
| 1842 | } |
| 1843 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | cmd->supported = (SUPPORTED_Autoneg); |
| 1845 | cmd->supported |= (SUPPORTED_100baseT_Half | |
| 1846 | SUPPORTED_100baseT_Full | |
| 1847 | SUPPORTED_10baseT_Half | |
| 1848 | SUPPORTED_10baseT_Full | |
| 1849 | SUPPORTED_MII); |
| 1850 | |
| 1851 | cmd->advertising = 0; |
| 1852 | if (bp->flags & B44_FLAG_ADV_10HALF) |
Matthew Wilcox | adf6e00 | 2005-10-04 11:25:17 -0600 | [diff] [blame] | 1853 | cmd->advertising |= ADVERTISED_10baseT_Half; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | if (bp->flags & B44_FLAG_ADV_10FULL) |
Matthew Wilcox | adf6e00 | 2005-10-04 11:25:17 -0600 | [diff] [blame] | 1855 | cmd->advertising |= ADVERTISED_10baseT_Full; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | if (bp->flags & B44_FLAG_ADV_100HALF) |
Matthew Wilcox | adf6e00 | 2005-10-04 11:25:17 -0600 | [diff] [blame] | 1857 | cmd->advertising |= ADVERTISED_100baseT_Half; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | if (bp->flags & B44_FLAG_ADV_100FULL) |
Matthew Wilcox | adf6e00 | 2005-10-04 11:25:17 -0600 | [diff] [blame] | 1859 | cmd->advertising |= ADVERTISED_100baseT_Full; |
| 1860 | cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; |
David Decotigny | 7073949 | 2011-04-27 18:32:40 +0000 | [diff] [blame] | 1861 | ethtool_cmd_speed_set(cmd, ((bp->flags & B44_FLAG_100_BASE_T) ? |
| 1862 | SPEED_100 : SPEED_10)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ? |
| 1864 | DUPLEX_FULL : DUPLEX_HALF; |
| 1865 | cmd->port = 0; |
| 1866 | cmd->phy_address = bp->phy_addr; |
Hauke Mehrtens | d619419 | 2013-12-20 02:16:06 +0100 | [diff] [blame] | 1867 | cmd->transceiver = (bp->flags & B44_FLAG_EXTERNAL_PHY) ? |
| 1868 | XCVR_EXTERNAL : XCVR_INTERNAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ? |
| 1870 | AUTONEG_DISABLE : AUTONEG_ENABLE; |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1871 | if (cmd->autoneg == AUTONEG_ENABLE) |
| 1872 | cmd->advertising |= ADVERTISED_Autoneg; |
| 1873 | if (!netif_running(dev)){ |
David Decotigny | 7073949 | 2011-04-27 18:32:40 +0000 | [diff] [blame] | 1874 | ethtool_cmd_speed_set(cmd, 0); |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1875 | cmd->duplex = 0xff; |
| 1876 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | cmd->maxtxpkt = 0; |
| 1878 | cmd->maxrxpkt = 0; |
| 1879 | return 0; |
| 1880 | } |
| 1881 | |
| 1882 | static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1883 | { |
| 1884 | struct b44 *bp = netdev_priv(dev); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 1885 | u32 speed; |
| 1886 | int ret; |
| 1887 | |
| 1888 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) { |
| 1889 | BUG_ON(!bp->phydev); |
| 1890 | spin_lock_irq(&bp->lock); |
| 1891 | if (netif_running(dev)) |
| 1892 | b44_setup_phy(bp); |
| 1893 | |
| 1894 | ret = phy_ethtool_sset(bp->phydev, cmd); |
| 1895 | |
| 1896 | spin_unlock_irq(&bp->lock); |
| 1897 | |
| 1898 | return ret; |
| 1899 | } |
| 1900 | |
| 1901 | speed = ethtool_cmd_speed(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | /* We do not support gigabit. */ |
| 1904 | if (cmd->autoneg == AUTONEG_ENABLE) { |
| 1905 | if (cmd->advertising & |
| 1906 | (ADVERTISED_1000baseT_Half | |
| 1907 | ADVERTISED_1000baseT_Full)) |
| 1908 | return -EINVAL; |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame] | 1909 | } else if ((speed != SPEED_100 && |
| 1910 | speed != SPEED_10) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | (cmd->duplex != DUPLEX_HALF && |
| 1912 | cmd->duplex != DUPLEX_FULL)) { |
| 1913 | return -EINVAL; |
| 1914 | } |
| 1915 | |
| 1916 | spin_lock_irq(&bp->lock); |
| 1917 | |
| 1918 | if (cmd->autoneg == AUTONEG_ENABLE) { |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1919 | bp->flags &= ~(B44_FLAG_FORCE_LINK | |
| 1920 | B44_FLAG_100_BASE_T | |
| 1921 | B44_FLAG_FULL_DUPLEX | |
| 1922 | B44_FLAG_ADV_10HALF | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | B44_FLAG_ADV_10FULL | |
| 1924 | B44_FLAG_ADV_100HALF | |
| 1925 | B44_FLAG_ADV_100FULL); |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1926 | if (cmd->advertising == 0) { |
| 1927 | bp->flags |= (B44_FLAG_ADV_10HALF | |
| 1928 | B44_FLAG_ADV_10FULL | |
| 1929 | B44_FLAG_ADV_100HALF | |
| 1930 | B44_FLAG_ADV_100FULL); |
| 1931 | } else { |
| 1932 | if (cmd->advertising & ADVERTISED_10baseT_Half) |
| 1933 | bp->flags |= B44_FLAG_ADV_10HALF; |
| 1934 | if (cmd->advertising & ADVERTISED_10baseT_Full) |
| 1935 | bp->flags |= B44_FLAG_ADV_10FULL; |
| 1936 | if (cmd->advertising & ADVERTISED_100baseT_Half) |
| 1937 | bp->flags |= B44_FLAG_ADV_100HALF; |
| 1938 | if (cmd->advertising & ADVERTISED_100baseT_Full) |
| 1939 | bp->flags |= B44_FLAG_ADV_100FULL; |
| 1940 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | } else { |
| 1942 | bp->flags |= B44_FLAG_FORCE_LINK; |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1943 | bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX); |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame] | 1944 | if (speed == SPEED_100) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | bp->flags |= B44_FLAG_100_BASE_T; |
| 1946 | if (cmd->duplex == DUPLEX_FULL) |
| 1947 | bp->flags |= B44_FLAG_FULL_DUPLEX; |
| 1948 | } |
| 1949 | |
Gary Zambrano | 47b9c3b | 2006-06-20 15:34:15 -0700 | [diff] [blame] | 1950 | if (netif_running(dev)) |
| 1951 | b44_setup_phy(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | |
| 1953 | spin_unlock_irq(&bp->lock); |
| 1954 | |
| 1955 | return 0; |
| 1956 | } |
| 1957 | |
| 1958 | static void b44_get_ringparam(struct net_device *dev, |
| 1959 | struct ethtool_ringparam *ering) |
| 1960 | { |
| 1961 | struct b44 *bp = netdev_priv(dev); |
| 1962 | |
| 1963 | ering->rx_max_pending = B44_RX_RING_SIZE - 1; |
| 1964 | ering->rx_pending = bp->rx_pending; |
| 1965 | |
| 1966 | /* XXX ethtool lacks a tx_max_pending, oops... */ |
| 1967 | } |
| 1968 | |
| 1969 | static int b44_set_ringparam(struct net_device *dev, |
| 1970 | struct ethtool_ringparam *ering) |
| 1971 | { |
| 1972 | struct b44 *bp = netdev_priv(dev); |
| 1973 | |
| 1974 | if ((ering->rx_pending > B44_RX_RING_SIZE - 1) || |
| 1975 | (ering->rx_mini_pending != 0) || |
| 1976 | (ering->rx_jumbo_pending != 0) || |
| 1977 | (ering->tx_pending > B44_TX_RING_SIZE - 1)) |
| 1978 | return -EINVAL; |
| 1979 | |
| 1980 | spin_lock_irq(&bp->lock); |
| 1981 | |
| 1982 | bp->rx_pending = ering->rx_pending; |
| 1983 | bp->tx_pending = ering->tx_pending; |
| 1984 | |
| 1985 | b44_halt(bp); |
| 1986 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 1987 | b44_init_hw(bp, B44_FULL_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | netif_wake_queue(bp->dev); |
| 1989 | spin_unlock_irq(&bp->lock); |
| 1990 | |
| 1991 | b44_enable_ints(bp); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 1992 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | return 0; |
| 1994 | } |
| 1995 | |
| 1996 | static void b44_get_pauseparam(struct net_device *dev, |
| 1997 | struct ethtool_pauseparam *epause) |
| 1998 | { |
| 1999 | struct b44 *bp = netdev_priv(dev); |
| 2000 | |
| 2001 | epause->autoneg = |
| 2002 | (bp->flags & B44_FLAG_PAUSE_AUTO) != 0; |
| 2003 | epause->rx_pause = |
| 2004 | (bp->flags & B44_FLAG_RX_PAUSE) != 0; |
| 2005 | epause->tx_pause = |
| 2006 | (bp->flags & B44_FLAG_TX_PAUSE) != 0; |
| 2007 | } |
| 2008 | |
| 2009 | static int b44_set_pauseparam(struct net_device *dev, |
| 2010 | struct ethtool_pauseparam *epause) |
| 2011 | { |
| 2012 | struct b44 *bp = netdev_priv(dev); |
| 2013 | |
| 2014 | spin_lock_irq(&bp->lock); |
| 2015 | if (epause->autoneg) |
| 2016 | bp->flags |= B44_FLAG_PAUSE_AUTO; |
| 2017 | else |
| 2018 | bp->flags &= ~B44_FLAG_PAUSE_AUTO; |
| 2019 | if (epause->rx_pause) |
| 2020 | bp->flags |= B44_FLAG_RX_PAUSE; |
| 2021 | else |
| 2022 | bp->flags &= ~B44_FLAG_RX_PAUSE; |
| 2023 | if (epause->tx_pause) |
| 2024 | bp->flags |= B44_FLAG_TX_PAUSE; |
| 2025 | else |
| 2026 | bp->flags &= ~B44_FLAG_TX_PAUSE; |
| 2027 | if (bp->flags & B44_FLAG_PAUSE_AUTO) { |
| 2028 | b44_halt(bp); |
| 2029 | b44_init_rings(bp); |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 2030 | b44_init_hw(bp, B44_FULL_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | } else { |
| 2032 | __b44_set_flow_ctrl(bp, bp->flags); |
| 2033 | } |
| 2034 | spin_unlock_irq(&bp->lock); |
| 2035 | |
| 2036 | b44_enable_ints(bp); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | return 0; |
| 2039 | } |
| 2040 | |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2041 | static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
| 2042 | { |
| 2043 | switch(stringset) { |
| 2044 | case ETH_SS_STATS: |
| 2045 | memcpy(data, *b44_gstrings, sizeof(b44_gstrings)); |
| 2046 | break; |
| 2047 | } |
| 2048 | } |
| 2049 | |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 2050 | static int b44_get_sset_count(struct net_device *dev, int sset) |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2051 | { |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 2052 | switch (sset) { |
| 2053 | case ETH_SS_STATS: |
| 2054 | return ARRAY_SIZE(b44_gstrings); |
| 2055 | default: |
| 2056 | return -EOPNOTSUPP; |
| 2057 | } |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2058 | } |
| 2059 | |
| 2060 | static void b44_get_ethtool_stats(struct net_device *dev, |
| 2061 | struct ethtool_stats *stats, u64 *data) |
| 2062 | { |
| 2063 | struct b44 *bp = netdev_priv(dev); |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 2064 | struct b44_hw_stats *hwstat = &bp->hw_stats; |
| 2065 | u64 *data_src, *data_dst; |
| 2066 | unsigned int start; |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2067 | u32 i; |
| 2068 | |
| 2069 | spin_lock_irq(&bp->lock); |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2070 | b44_stats_update(bp); |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2071 | spin_unlock_irq(&bp->lock); |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 2072 | |
| 2073 | do { |
| 2074 | data_src = &hwstat->tx_good_octets; |
| 2075 | data_dst = data; |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 2076 | start = u64_stats_fetch_begin_irq(&hwstat->syncp); |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 2077 | |
| 2078 | for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++) |
| 2079 | *data_dst++ = *data_src++; |
| 2080 | |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 2081 | } while (u64_stats_fetch_retry_irq(&hwstat->syncp, start)); |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2082 | } |
| 2083 | |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2084 | static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2085 | { |
| 2086 | struct b44 *bp = netdev_priv(dev); |
| 2087 | |
| 2088 | wol->supported = WAKE_MAGIC; |
| 2089 | if (bp->flags & B44_FLAG_WOL_ENABLE) |
| 2090 | wol->wolopts = WAKE_MAGIC; |
| 2091 | else |
| 2092 | wol->wolopts = 0; |
| 2093 | memset(&wol->sopass, 0, sizeof(wol->sopass)); |
| 2094 | } |
| 2095 | |
| 2096 | static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| 2097 | { |
| 2098 | struct b44 *bp = netdev_priv(dev); |
| 2099 | |
| 2100 | spin_lock_irq(&bp->lock); |
| 2101 | if (wol->wolopts & WAKE_MAGIC) |
| 2102 | bp->flags |= B44_FLAG_WOL_ENABLE; |
| 2103 | else |
| 2104 | bp->flags &= ~B44_FLAG_WOL_ENABLE; |
| 2105 | spin_unlock_irq(&bp->lock); |
| 2106 | |
Andrey Skvortsov | 5580373 | 2014-12-04 11:32:46 -0500 | [diff] [blame] | 2107 | device_set_wakeup_enable(bp->sdev->dev, wol->wolopts & WAKE_MAGIC); |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2108 | return 0; |
| 2109 | } |
| 2110 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 2111 | static const struct ethtool_ops b44_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | .get_drvinfo = b44_get_drvinfo, |
| 2113 | .get_settings = b44_get_settings, |
| 2114 | .set_settings = b44_set_settings, |
| 2115 | .nway_reset = b44_nway_reset, |
| 2116 | .get_link = ethtool_op_get_link, |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2117 | .get_wol = b44_get_wol, |
| 2118 | .set_wol = b44_set_wol, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | .get_ringparam = b44_get_ringparam, |
| 2120 | .set_ringparam = b44_set_ringparam, |
| 2121 | .get_pauseparam = b44_get_pauseparam, |
| 2122 | .set_pauseparam = b44_set_pauseparam, |
| 2123 | .get_msglevel = b44_get_msglevel, |
| 2124 | .set_msglevel = b44_set_msglevel, |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2125 | .get_strings = b44_get_strings, |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 2126 | .get_sset_count = b44_get_sset_count, |
Francois Romieu | 3353930 | 2005-11-07 01:51:34 +0100 | [diff] [blame] | 2127 | .get_ethtool_stats = b44_get_ethtool_stats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | }; |
| 2129 | |
| 2130 | static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 2131 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | struct b44 *bp = netdev_priv(dev); |
Francois Romieu | 3410572 | 2005-11-30 22:32:13 +0100 | [diff] [blame] | 2133 | int err = -EINVAL; |
| 2134 | |
| 2135 | if (!netif_running(dev)) |
| 2136 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | |
| 2138 | spin_lock_irq(&bp->lock); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2139 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) { |
| 2140 | BUG_ON(!bp->phydev); |
| 2141 | err = phy_mii_ioctl(bp->phydev, ifr, cmd); |
| 2142 | } else { |
| 2143 | err = generic_mii_ioctl(&bp->mii_if, if_mii(ifr), cmd, NULL); |
| 2144 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | spin_unlock_irq(&bp->lock); |
Francois Romieu | 3410572 | 2005-11-30 22:32:13 +0100 | [diff] [blame] | 2146 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | return err; |
| 2148 | } |
| 2149 | |
Bill Pemberton | 2397188 | 2012-12-03 09:22:57 -0500 | [diff] [blame] | 2150 | static int b44_get_invariants(struct b44 *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2152 | struct ssb_device *sdev = bp->sdev; |
| 2153 | int err = 0; |
| 2154 | u8 *addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2156 | bp->dma_offset = ssb_dma_translation(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2158 | if (sdev->bus->bustype == SSB_BUSTYPE_SSB && |
| 2159 | instance > 1) { |
Larry Finger | 458414b | 2007-11-09 16:56:10 -0600 | [diff] [blame] | 2160 | addr = sdev->bus->sprom.et1mac; |
| 2161 | bp->phy_addr = sdev->bus->sprom.et1phyaddr; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2162 | } else { |
Larry Finger | 458414b | 2007-11-09 16:56:10 -0600 | [diff] [blame] | 2163 | addr = sdev->bus->sprom.et0mac; |
| 2164 | bp->phy_addr = sdev->bus->sprom.et0phyaddr; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2165 | } |
Michael Buesch | 5ea7963 | 2008-03-25 18:04:46 +0100 | [diff] [blame] | 2166 | /* Some ROMs have buggy PHY addresses with the high |
| 2167 | * bits set (sign extension?). Truncate them to a |
| 2168 | * valid PHY address. */ |
| 2169 | bp->phy_addr &= 0x1F; |
| 2170 | |
Joe Perches | d458cdf | 2013-10-01 19:04:40 -0700 | [diff] [blame] | 2171 | memcpy(bp->dev->dev_addr, addr, ETH_ALEN); |
Gary Zambrano | 391fc09 | 2006-03-28 14:57:38 -0800 | [diff] [blame] | 2172 | |
| 2173 | if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){ |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 2174 | pr_err("Invalid MAC address found in EEPROM\n"); |
Gary Zambrano | 391fc09 | 2006-03-28 14:57:38 -0800 | [diff] [blame] | 2175 | return -EINVAL; |
| 2176 | } |
| 2177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | bp->imask = IMASK_DEF; |
| 2179 | |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2180 | /* XXX - really required? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | bp->flags |= B44_FLAG_BUGGY_TXPTR; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2182 | */ |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2183 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2184 | if (bp->sdev->id.revision >= 7) |
| 2185 | bp->flags |= B44_FLAG_B0_ANDLATER; |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | return err; |
| 2188 | } |
| 2189 | |
Stephen Hemminger | 403413e | 2009-01-07 18:10:49 -0800 | [diff] [blame] | 2190 | static const struct net_device_ops b44_netdev_ops = { |
| 2191 | .ndo_open = b44_open, |
| 2192 | .ndo_stop = b44_close, |
| 2193 | .ndo_start_xmit = b44_start_xmit, |
Kevin Groeneveld | eeda858 | 2012-07-17 17:46:01 +0000 | [diff] [blame] | 2194 | .ndo_get_stats64 = b44_get_stats64, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 2195 | .ndo_set_rx_mode = b44_set_rx_mode, |
Stephen Hemminger | 403413e | 2009-01-07 18:10:49 -0800 | [diff] [blame] | 2196 | .ndo_set_mac_address = b44_set_mac_addr, |
| 2197 | .ndo_validate_addr = eth_validate_addr, |
| 2198 | .ndo_do_ioctl = b44_ioctl, |
| 2199 | .ndo_tx_timeout = b44_tx_timeout, |
| 2200 | .ndo_change_mtu = b44_change_mtu, |
| 2201 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2202 | .ndo_poll_controller = b44_poll_controller, |
| 2203 | #endif |
| 2204 | }; |
| 2205 | |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2206 | static void b44_adjust_link(struct net_device *dev) |
| 2207 | { |
| 2208 | struct b44 *bp = netdev_priv(dev); |
| 2209 | struct phy_device *phydev = bp->phydev; |
| 2210 | bool status_changed = 0; |
| 2211 | |
| 2212 | BUG_ON(!phydev); |
| 2213 | |
| 2214 | if (bp->old_link != phydev->link) { |
| 2215 | status_changed = 1; |
| 2216 | bp->old_link = phydev->link; |
| 2217 | } |
| 2218 | |
| 2219 | /* reflect duplex change */ |
| 2220 | if (phydev->link) { |
| 2221 | if ((phydev->duplex == DUPLEX_HALF) && |
| 2222 | (bp->flags & B44_FLAG_FULL_DUPLEX)) { |
| 2223 | status_changed = 1; |
| 2224 | bp->flags &= ~B44_FLAG_FULL_DUPLEX; |
| 2225 | } else if ((phydev->duplex == DUPLEX_FULL) && |
| 2226 | !(bp->flags & B44_FLAG_FULL_DUPLEX)) { |
| 2227 | status_changed = 1; |
| 2228 | bp->flags |= B44_FLAG_FULL_DUPLEX; |
| 2229 | } |
| 2230 | } |
| 2231 | |
| 2232 | if (status_changed) { |
Hauke Mehrtens | 1d3f41e | 2014-03-02 17:29:34 +0100 | [diff] [blame] | 2233 | u32 val = br32(bp, B44_TX_CTRL); |
| 2234 | if (bp->flags & B44_FLAG_FULL_DUPLEX) |
| 2235 | val |= TX_CTRL_DUPLEX; |
| 2236 | else |
| 2237 | val &= ~TX_CTRL_DUPLEX; |
| 2238 | bw32(bp, B44_TX_CTRL, val); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2239 | phy_print_status(phydev); |
| 2240 | } |
| 2241 | } |
| 2242 | |
| 2243 | static int b44_register_phy_one(struct b44 *bp) |
| 2244 | { |
| 2245 | struct mii_bus *mii_bus; |
| 2246 | struct ssb_device *sdev = bp->sdev; |
| 2247 | struct phy_device *phydev; |
| 2248 | char bus_id[MII_BUS_ID_SIZE + 3]; |
Hauke Mehrtens | b04138b | 2013-12-20 02:16:13 +0100 | [diff] [blame] | 2249 | struct ssb_sprom *sprom = &sdev->bus->sprom; |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2250 | int err; |
| 2251 | |
| 2252 | mii_bus = mdiobus_alloc(); |
| 2253 | if (!mii_bus) { |
| 2254 | dev_err(sdev->dev, "mdiobus_alloc() failed\n"); |
| 2255 | err = -ENOMEM; |
| 2256 | goto err_out; |
| 2257 | } |
| 2258 | |
| 2259 | mii_bus->priv = bp; |
| 2260 | mii_bus->read = b44_mdio_read_phylib; |
| 2261 | mii_bus->write = b44_mdio_write_phylib; |
| 2262 | mii_bus->name = "b44_eth_mii"; |
| 2263 | mii_bus->parent = sdev->dev; |
| 2264 | mii_bus->phy_mask = ~(1 << bp->phy_addr); |
| 2265 | snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%x", instance); |
| 2266 | mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); |
| 2267 | if (!mii_bus->irq) { |
| 2268 | dev_err(sdev->dev, "mii_bus irq allocation failed\n"); |
| 2269 | err = -ENOMEM; |
| 2270 | goto err_out_mdiobus; |
| 2271 | } |
| 2272 | |
| 2273 | memset(mii_bus->irq, PHY_POLL, sizeof(int) * PHY_MAX_ADDR); |
| 2274 | |
| 2275 | bp->mii_bus = mii_bus; |
| 2276 | |
| 2277 | err = mdiobus_register(mii_bus); |
| 2278 | if (err) { |
| 2279 | dev_err(sdev->dev, "failed to register MII bus\n"); |
| 2280 | goto err_out_mdiobus_irq; |
| 2281 | } |
| 2282 | |
Hauke Mehrtens | b04138b | 2013-12-20 02:16:13 +0100 | [diff] [blame] | 2283 | if (!bp->mii_bus->phy_map[bp->phy_addr] && |
| 2284 | (sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) { |
| 2285 | |
| 2286 | dev_info(sdev->dev, |
| 2287 | "could not find PHY at %i, use fixed one\n", |
| 2288 | bp->phy_addr); |
| 2289 | |
| 2290 | bp->phy_addr = 0; |
| 2291 | snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, "fixed-0", |
| 2292 | bp->phy_addr); |
| 2293 | } else { |
| 2294 | snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, mii_bus->id, |
| 2295 | bp->phy_addr); |
| 2296 | } |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2297 | |
| 2298 | phydev = phy_connect(bp->dev, bus_id, &b44_adjust_link, |
| 2299 | PHY_INTERFACE_MODE_MII); |
| 2300 | if (IS_ERR(phydev)) { |
| 2301 | dev_err(sdev->dev, "could not attach PHY at %i\n", |
| 2302 | bp->phy_addr); |
| 2303 | err = PTR_ERR(phydev); |
| 2304 | goto err_out_mdiobus_unregister; |
| 2305 | } |
| 2306 | |
| 2307 | /* mask with MAC supported features */ |
| 2308 | phydev->supported &= (SUPPORTED_100baseT_Half | |
| 2309 | SUPPORTED_100baseT_Full | |
| 2310 | SUPPORTED_Autoneg | |
| 2311 | SUPPORTED_MII); |
| 2312 | phydev->advertising = phydev->supported; |
| 2313 | |
| 2314 | bp->phydev = phydev; |
| 2315 | bp->old_link = 0; |
| 2316 | bp->phy_addr = phydev->addr; |
| 2317 | |
| 2318 | dev_info(sdev->dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s)\n", |
| 2319 | phydev->drv->name, dev_name(&phydev->dev)); |
| 2320 | |
| 2321 | return 0; |
| 2322 | |
| 2323 | err_out_mdiobus_unregister: |
| 2324 | mdiobus_unregister(mii_bus); |
| 2325 | |
| 2326 | err_out_mdiobus_irq: |
| 2327 | kfree(mii_bus->irq); |
| 2328 | |
| 2329 | err_out_mdiobus: |
| 2330 | mdiobus_free(mii_bus); |
| 2331 | |
| 2332 | err_out: |
| 2333 | return err; |
| 2334 | } |
| 2335 | |
| 2336 | static void b44_unregister_phy_one(struct b44 *bp) |
| 2337 | { |
| 2338 | struct mii_bus *mii_bus = bp->mii_bus; |
| 2339 | |
| 2340 | phy_disconnect(bp->phydev); |
| 2341 | mdiobus_unregister(mii_bus); |
| 2342 | kfree(mii_bus->irq); |
| 2343 | mdiobus_free(mii_bus); |
| 2344 | } |
| 2345 | |
Bill Pemberton | 2397188 | 2012-12-03 09:22:57 -0500 | [diff] [blame] | 2346 | static int b44_init_one(struct ssb_device *sdev, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 2347 | const struct ssb_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | struct net_device *dev; |
| 2350 | struct b44 *bp; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2351 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2353 | instance++; |
| 2354 | |
Joe Perches | 7329f0d | 2011-07-05 07:43:46 +0000 | [diff] [blame] | 2355 | pr_info_once("%s version %s\n", DRV_DESCRIPTION, DRV_MODULE_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | |
| 2357 | dev = alloc_etherdev(sizeof(*bp)); |
| 2358 | if (!dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | err = -ENOMEM; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2360 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | } |
| 2362 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2363 | SET_NETDEV_DEV(dev, sdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | |
| 2365 | /* No interesting netdevice features in this card... */ |
| 2366 | dev->features |= 0; |
| 2367 | |
| 2368 | bp = netdev_priv(dev); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2369 | bp->sdev = sdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | bp->dev = dev; |
Eric Dumazet | a58c891 | 2009-01-15 15:29:35 -0800 | [diff] [blame] | 2371 | bp->force_copybreak = 0; |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 2372 | |
| 2373 | bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | |
| 2375 | spin_lock_init(&bp->lock); |
| 2376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | bp->rx_pending = B44_DEF_RX_RING_PENDING; |
| 2378 | bp->tx_pending = B44_DEF_TX_RING_PENDING; |
| 2379 | |
Stephen Hemminger | 403413e | 2009-01-07 18:10:49 -0800 | [diff] [blame] | 2380 | dev->netdev_ops = &b44_netdev_ops; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2381 | netif_napi_add(dev, &bp->napi, b44_poll, 64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | dev->watchdog_timeo = B44_TX_TIMEOUT; |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2383 | dev->irq = sdev->irq; |
Wilfried Klaebe | 7ad24ea | 2014-05-11 00:12:32 +0000 | [diff] [blame] | 2384 | dev->ethtool_ops = &b44_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2386 | err = ssb_bus_powerup(sdev->bus, 0); |
| 2387 | if (err) { |
| 2388 | dev_err(sdev->dev, |
| 2389 | "Failed to powerup the bus\n"); |
| 2390 | goto err_out_free_dev; |
| 2391 | } |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 2392 | |
Russell King | 4011f9f | 2013-06-26 19:04:29 +0100 | [diff] [blame] | 2393 | if (dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30))) { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2394 | dev_err(sdev->dev, |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 2395 | "Required 30BIT DMA mask unsupported by the system\n"); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2396 | goto err_out_powerdown; |
| 2397 | } |
FUJITA Tomonori | 39a6f4b | 2010-06-03 19:37:40 -0700 | [diff] [blame] | 2398 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | err = b44_get_invariants(bp); |
| 2400 | if (err) { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2401 | dev_err(sdev->dev, |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 2402 | "Problem fetching invariants of chip, aborting\n"); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2403 | goto err_out_powerdown; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | } |
| 2405 | |
Hauke Mehrtens | 7befa6a | 2013-12-20 02:16:08 +0100 | [diff] [blame] | 2406 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) { |
| 2407 | dev_err(sdev->dev, "No PHY present on this MAC, aborting\n"); |
| 2408 | err = -ENODEV; |
| 2409 | goto err_out_powerdown; |
| 2410 | } |
| 2411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | bp->mii_if.dev = dev; |
Hauke Mehrtens | 348baa6 | 2013-12-20 02:16:09 +0100 | [diff] [blame] | 2413 | bp->mii_if.mdio_read = b44_mdio_read_mii; |
| 2414 | bp->mii_if.mdio_write = b44_mdio_write_mii; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | bp->mii_if.phy_id = bp->phy_addr; |
| 2416 | bp->mii_if.phy_id_mask = 0x1f; |
| 2417 | bp->mii_if.reg_num_mask = 0x1f; |
| 2418 | |
| 2419 | /* By default, advertise all speed/duplex settings. */ |
| 2420 | bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL | |
| 2421 | B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL); |
| 2422 | |
| 2423 | /* By default, auto-negotiate PAUSE. */ |
| 2424 | bp->flags |= B44_FLAG_PAUSE_AUTO; |
| 2425 | |
| 2426 | err = register_netdev(dev); |
| 2427 | if (err) { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 2428 | dev_err(sdev->dev, "Cannot register net device, aborting\n"); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2429 | goto err_out_powerdown; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2430 | } |
| 2431 | |
Paul Fertser | bcf64aa | 2010-10-11 15:45:35 -0700 | [diff] [blame] | 2432 | netif_carrier_off(dev); |
| 2433 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2434 | ssb_set_drvdata(sdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2435 | |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2436 | /* Chip reset provides power to the b44 MAC & PCI cores, which |
Gary Zambrano | 5c51312 | 2006-03-29 17:12:05 -0500 | [diff] [blame] | 2437 | * is necessary for MAC register access. |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2438 | */ |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 2439 | b44_chip_reset(bp, B44_CHIP_RESET_FULL); |
Gary Zambrano | 5c51312 | 2006-03-29 17:12:05 -0500 | [diff] [blame] | 2440 | |
Hauke Mehrtens | 8850dce | 2010-02-20 10:55:25 +0000 | [diff] [blame] | 2441 | /* do a phy reset to test if there is an active phy */ |
Hauke Mehrtens | 656a7c2 | 2013-12-20 02:16:12 +0100 | [diff] [blame] | 2442 | err = b44_phy_reset(bp); |
| 2443 | if (err < 0) { |
| 2444 | dev_err(sdev->dev, "phy reset failed\n"); |
| 2445 | goto err_out_unregister_netdev; |
| 2446 | } |
Hauke Mehrtens | 8850dce | 2010-02-20 10:55:25 +0000 | [diff] [blame] | 2447 | |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2448 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) { |
| 2449 | err = b44_register_phy_one(bp); |
| 2450 | if (err) { |
| 2451 | dev_err(sdev->dev, "Cannot register PHY, aborting\n"); |
| 2452 | goto err_out_unregister_netdev; |
| 2453 | } |
| 2454 | } |
| 2455 | |
Andrey Skvortsov | 5580373 | 2014-12-04 11:32:46 -0500 | [diff] [blame] | 2456 | device_set_wakeup_capable(sdev->dev, true); |
Joe Perches | 7329f0d | 2011-07-05 07:43:46 +0000 | [diff] [blame] | 2457 | netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | |
| 2459 | return 0; |
| 2460 | |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2461 | err_out_unregister_netdev: |
| 2462 | unregister_netdev(dev); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2463 | err_out_powerdown: |
| 2464 | ssb_bus_may_powerdown(sdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2465 | |
| 2466 | err_out_free_dev: |
| 2467 | free_netdev(dev); |
| 2468 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2469 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2470 | return err; |
| 2471 | } |
| 2472 | |
Bill Pemberton | 2397188 | 2012-12-03 09:22:57 -0500 | [diff] [blame] | 2473 | static void b44_remove_one(struct ssb_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2475 | struct net_device *dev = ssb_get_drvdata(sdev); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2476 | struct b44 *bp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 2478 | unregister_netdev(dev); |
Hauke Mehrtens | 86f4ea6 | 2013-12-20 02:16:10 +0100 | [diff] [blame] | 2479 | if (bp->flags & B44_FLAG_EXTERNAL_PHY) |
| 2480 | b44_unregister_phy_one(bp); |
Michael Buesch | e92aa63 | 2009-02-26 22:35:02 -0800 | [diff] [blame] | 2481 | ssb_device_disable(sdev, 0); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2482 | ssb_bus_may_powerdown(sdev->bus); |
Francois Romieu | 874a621 | 2005-11-07 01:50:46 +0100 | [diff] [blame] | 2483 | free_netdev(dev); |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 2484 | ssb_pcihost_set_power_state(sdev, PCI_D3hot); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2485 | ssb_set_drvdata(sdev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | } |
| 2487 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2488 | static int b44_suspend(struct ssb_device *sdev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2489 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2490 | struct net_device *dev = ssb_get_drvdata(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | struct b44 *bp = netdev_priv(dev); |
| 2492 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2493 | if (!netif_running(dev)) |
| 2494 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2495 | |
| 2496 | del_timer_sync(&bp->timer); |
| 2497 | |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2498 | spin_lock_irq(&bp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | |
| 2500 | b44_halt(bp); |
Jeff Garzik | 10badc2 | 2006-04-12 18:04:32 -0400 | [diff] [blame] | 2501 | netif_carrier_off(bp->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2502 | netif_device_detach(bp->dev); |
| 2503 | b44_free_rings(bp); |
| 2504 | |
| 2505 | spin_unlock_irq(&bp->lock); |
Pavel Machek | 46e1785 | 2005-10-28 15:14:47 -0700 | [diff] [blame] | 2506 | |
| 2507 | free_irq(dev->irq, dev); |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2508 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
Michael Chan | 5fc7d61 | 2007-01-26 23:59:57 -0800 | [diff] [blame] | 2509 | b44_init_hw(bp, B44_PARTIAL_RESET); |
Gary Zambrano | 52cafd9 | 2006-06-20 15:34:23 -0700 | [diff] [blame] | 2510 | b44_setup_wol(bp); |
| 2511 | } |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2512 | |
Miguel Botón | fedb0ee | 2008-01-01 01:17:54 +0100 | [diff] [blame] | 2513 | ssb_pcihost_set_power_state(sdev, PCI_D3hot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2514 | return 0; |
| 2515 | } |
| 2516 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2517 | static int b44_resume(struct ssb_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2519 | struct net_device *dev = ssb_get_drvdata(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | struct b44 *bp = netdev_priv(dev); |
Dmitriy Monakhov | 90afd0e | 2007-01-27 00:00:03 -0800 | [diff] [blame] | 2521 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2523 | rc = ssb_bus_powerup(sdev->bus, 0); |
Dmitriy Monakhov | 90afd0e | 2007-01-27 00:00:03 -0800 | [diff] [blame] | 2524 | if (rc) { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2525 | dev_err(sdev->dev, |
| 2526 | "Failed to powerup the bus\n"); |
Dmitriy Monakhov | 90afd0e | 2007-01-27 00:00:03 -0800 | [diff] [blame] | 2527 | return rc; |
| 2528 | } |
| 2529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2530 | if (!netif_running(dev)) |
| 2531 | return 0; |
| 2532 | |
James Hogan | afed4cc | 2010-10-17 01:48:59 +0000 | [diff] [blame] | 2533 | spin_lock_irq(&bp->lock); |
| 2534 | b44_init_rings(bp); |
| 2535 | b44_init_hw(bp, B44_FULL_RESET); |
| 2536 | spin_unlock_irq(&bp->lock); |
| 2537 | |
| 2538 | /* |
| 2539 | * As a shared interrupt, the handler can be called immediately. To be |
| 2540 | * able to check the interrupt status the hardware must already be |
| 2541 | * powered back on (b44_init_hw). |
| 2542 | */ |
Dmitriy Monakhov | 90afd0e | 2007-01-27 00:00:03 -0800 | [diff] [blame] | 2543 | rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
| 2544 | if (rc) { |
Joe Perches | 2fc96ff | 2010-02-17 15:01:50 +0000 | [diff] [blame] | 2545 | netdev_err(dev, "request_irq failed\n"); |
James Hogan | afed4cc | 2010-10-17 01:48:59 +0000 | [diff] [blame] | 2546 | spin_lock_irq(&bp->lock); |
| 2547 | b44_halt(bp); |
| 2548 | b44_free_rings(bp); |
| 2549 | spin_unlock_irq(&bp->lock); |
Dmitriy Monakhov | 90afd0e | 2007-01-27 00:00:03 -0800 | [diff] [blame] | 2550 | return rc; |
| 2551 | } |
Pavel Machek | 46e1785 | 2005-10-28 15:14:47 -0700 | [diff] [blame] | 2552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | netif_device_attach(bp->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | b44_enable_ints(bp); |
Mark Lord | d9e2d18 | 2005-11-30 22:30:23 +0100 | [diff] [blame] | 2556 | netif_wake_queue(dev); |
Stephen Hemminger | a72a817 | 2007-06-04 13:25:37 -0700 | [diff] [blame] | 2557 | |
| 2558 | mod_timer(&bp->timer, jiffies + 1); |
| 2559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | return 0; |
| 2561 | } |
| 2562 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2563 | static struct ssb_driver b44_ssb_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | .name = DRV_MODULE_NAME, |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2565 | .id_table = b44_ssb_tbl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | .probe = b44_init_one, |
Bill Pemberton | 2397188 | 2012-12-03 09:22:57 -0500 | [diff] [blame] | 2567 | .remove = b44_remove_one, |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2568 | .suspend = b44_suspend, |
| 2569 | .resume = b44_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | }; |
| 2571 | |
Hauke Mehrtens | cd15598 | 2011-06-21 20:57:16 +0200 | [diff] [blame] | 2572 | static inline int __init b44_pci_init(void) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2573 | { |
| 2574 | int err = 0; |
| 2575 | #ifdef CONFIG_B44_PCI |
| 2576 | err = ssb_pcihost_register(&b44_pci_driver); |
| 2577 | #endif |
| 2578 | return err; |
| 2579 | } |
| 2580 | |
Nikola Pajkovsky | 64f0a83 | 2012-02-19 10:47:43 +0000 | [diff] [blame] | 2581 | static inline void b44_pci_exit(void) |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2582 | { |
| 2583 | #ifdef CONFIG_B44_PCI |
| 2584 | ssb_pcihost_unregister(&b44_pci_driver); |
| 2585 | #endif |
| 2586 | } |
| 2587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2588 | static int __init b44_init(void) |
| 2589 | { |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 2590 | unsigned int dma_desc_align_size = dma_get_cache_alignment(); |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2591 | int err; |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 2592 | |
| 2593 | /* Setup paramaters for syncing RX/TX DMA descriptors */ |
Alan Cox | 22d4d77 | 2006-01-17 17:53:56 +0000 | [diff] [blame] | 2594 | dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc)); |
John W. Linville | 9f38c63 | 2005-10-18 21:30:59 -0400 | [diff] [blame] | 2595 | |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2596 | err = b44_pci_init(); |
| 2597 | if (err) |
| 2598 | return err; |
| 2599 | err = ssb_driver_register(&b44_ssb_driver); |
| 2600 | if (err) |
| 2601 | b44_pci_exit(); |
| 2602 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | } |
| 2604 | |
| 2605 | static void __exit b44_cleanup(void) |
| 2606 | { |
Michael Buesch | 753f492 | 2007-09-19 14:20:30 -0700 | [diff] [blame] | 2607 | ssb_driver_unregister(&b44_ssb_driver); |
| 2608 | b44_pci_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | } |
| 2610 | |
| 2611 | module_init(b44_init); |
| 2612 | module_exit(b44_cleanup); |
| 2613 | |