Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx. |
| 3 | * Copyright (c) 1997 Dan Malek (dmalek@jlc.net) |
| 4 | * |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 5 | * Right now, I am very wasteful with the buffers. I allocate memory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * pages and then divide them into 2K frame buffers. This way I know I |
| 7 | * have buffers large enough to hold one frame within one buffer descriptor. |
| 8 | * Once I get this working, I will use 64 or 128 byte CPM buffers, which |
| 9 | * will be much more memory efficient and will easily handle lots of |
| 10 | * small packets. |
| 11 | * |
| 12 | * Much better multiple PHY support by Magnus Damm. |
| 13 | * Copyright (c) 2000 Ericsson Radio Systems AB. |
| 14 | * |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 15 | * Support for FEC controller of ColdFire processors. |
| 16 | * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com) |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 17 | * |
| 18 | * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be) |
Philippe De Muyter | 677177c | 2006-06-27 13:05:33 +1000 | [diff] [blame] | 19 | * Copyright (c) 2004-2006 Macq Electronique SA. |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 20 | * |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 21 | * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | */ |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/string.h> |
| 27 | #include <linux/ptrace.h> |
| 28 | #include <linux/errno.h> |
| 29 | #include <linux/ioport.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/delay.h> |
| 33 | #include <linux/netdevice.h> |
| 34 | #include <linux/etherdevice.h> |
| 35 | #include <linux/skbuff.h> |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 36 | #include <linux/in.h> |
| 37 | #include <linux/ip.h> |
| 38 | #include <net/ip.h> |
| 39 | #include <linux/tcp.h> |
| 40 | #include <linux/udp.h> |
| 41 | #include <linux/icmp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/spinlock.h> |
| 43 | #include <linux/workqueue.h> |
| 44 | #include <linux/bitops.h> |
Sascha Hauer | 6f501b1 | 2009-01-28 23:03:05 +0000 | [diff] [blame] | 45 | #include <linux/io.h> |
| 46 | #include <linux/irq.h> |
Sascha Hauer | 196719e | 2009-01-28 23:03:10 +0000 | [diff] [blame] | 47 | #include <linux/clk.h> |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 48 | #include <linux/platform_device.h> |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 49 | #include <linux/phy.h> |
Baruch Siach | 5eb32bd | 2010-05-24 00:36:13 -0700 | [diff] [blame] | 50 | #include <linux/fec.h> |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 51 | #include <linux/of.h> |
| 52 | #include <linux/of_device.h> |
| 53 | #include <linux/of_gpio.h> |
| 54 | #include <linux/of_net.h> |
Shawn Guo | 5fa9c0f | 2012-06-27 03:45:21 +0000 | [diff] [blame] | 55 | #include <linux/regulator/consumer.h> |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 56 | #include <linux/if_vlan.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Greg Ungerer | 080853a | 2007-07-30 16:28:46 +1000 | [diff] [blame] | 58 | #include <asm/cacheflush.h> |
Sascha Hauer | 196719e | 2009-01-28 23:03:10 +0000 | [diff] [blame] | 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include "fec.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Christoph Müllner | 772e42b | 2013-06-27 21:18:23 +0200 | [diff] [blame] | 62 | static void set_multicast_list(struct net_device *ndev); |
| 63 | |
Uwe Kleine-König | 085e79e | 2011-01-17 09:52:18 +0100 | [diff] [blame] | 64 | #if defined(CONFIG_ARM) |
Sascha Hauer | 196719e | 2009-01-28 23:03:10 +0000 | [diff] [blame] | 65 | #define FEC_ALIGNMENT 0xf |
| 66 | #else |
| 67 | #define FEC_ALIGNMENT 0x3 |
| 68 | #endif |
| 69 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 70 | #define DRIVER_NAME "fec" |
| 71 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 72 | /* Pause frame feild and FIFO threshold */ |
| 73 | #define FEC_ENET_FCE (1 << 5) |
| 74 | #define FEC_ENET_RSEM_V 0x84 |
| 75 | #define FEC_ENET_RSFL_V 16 |
| 76 | #define FEC_ENET_RAEM_V 0x8 |
| 77 | #define FEC_ENET_RAFL_V 0x8 |
| 78 | #define FEC_ENET_OPD_V 0xFFF0 |
| 79 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 80 | /* Controller is ENET-MAC */ |
| 81 | #define FEC_QUIRK_ENET_MAC (1 << 0) |
| 82 | /* Controller needs driver to swap frame */ |
| 83 | #define FEC_QUIRK_SWAP_FRAME (1 << 1) |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 84 | /* Controller uses gasket */ |
| 85 | #define FEC_QUIRK_USE_GASKET (1 << 2) |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 86 | /* Controller has GBIT support */ |
| 87 | #define FEC_QUIRK_HAS_GBIT (1 << 3) |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 88 | /* Controller has extend desc buffer */ |
| 89 | #define FEC_QUIRK_HAS_BUFDESC_EX (1 << 4) |
Shawn Guo | 4849625 | 2013-05-08 21:08:22 +0000 | [diff] [blame] | 90 | /* Controller has hardware checksum support */ |
| 91 | #define FEC_QUIRK_HAS_CSUM (1 << 5) |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 92 | /* Controller has hardware vlan support */ |
| 93 | #define FEC_QUIRK_HAS_VLAN (1 << 6) |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 94 | /* ENET IP errata ERR006358 |
| 95 | * |
| 96 | * If the ready bit in the transmit buffer descriptor (TxBD[R]) is previously |
| 97 | * detected as not set during a prior frame transmission, then the |
| 98 | * ENET_TDAR[TDAR] bit is cleared at a later time, even if additional TxBDs |
| 99 | * were added to the ring and the ENET_TDAR[TDAR] bit is set. This results in |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 100 | * frames not being transmitted until there is a 0-to-1 transition on |
| 101 | * ENET_TDAR[TDAR]. |
| 102 | */ |
| 103 | #define FEC_QUIRK_ERR006358 (1 << 7) |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 104 | |
| 105 | static struct platform_device_id fec_devtype[] = { |
| 106 | { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 107 | /* keep it for coldfire */ |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 108 | .name = DRIVER_NAME, |
| 109 | .driver_data = 0, |
| 110 | }, { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 111 | .name = "imx25-fec", |
| 112 | .driver_data = FEC_QUIRK_USE_GASKET, |
| 113 | }, { |
| 114 | .name = "imx27-fec", |
| 115 | .driver_data = 0, |
| 116 | }, { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 117 | .name = "imx28-fec", |
| 118 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME, |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 119 | }, { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 120 | .name = "imx6q-fec", |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 121 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 122 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 123 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_ERR006358, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 124 | }, { |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 125 | .name = "mvf600-fec", |
Jingchang Lu | ca7c4a4 | 2013-04-11 21:12:45 +0000 | [diff] [blame] | 126 | .driver_data = FEC_QUIRK_ENET_MAC, |
| 127 | }, { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 128 | /* sentinel */ |
| 129 | } |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 130 | }; |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 131 | MODULE_DEVICE_TABLE(platform, fec_devtype); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 132 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 133 | enum imx_fec_type { |
Lothar Waßmann | a7dd321 | 2011-12-07 21:59:25 +0000 | [diff] [blame] | 134 | IMX25_FEC = 1, /* runs on i.mx25/50/53 */ |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 135 | IMX27_FEC, /* runs on i.mx27/35/51 */ |
| 136 | IMX28_FEC, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 137 | IMX6Q_FEC, |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 138 | MVF600_FEC, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 139 | }; |
| 140 | |
| 141 | static const struct of_device_id fec_dt_ids[] = { |
| 142 | { .compatible = "fsl,imx25-fec", .data = &fec_devtype[IMX25_FEC], }, |
| 143 | { .compatible = "fsl,imx27-fec", .data = &fec_devtype[IMX27_FEC], }, |
| 144 | { .compatible = "fsl,imx28-fec", .data = &fec_devtype[IMX28_FEC], }, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 145 | { .compatible = "fsl,imx6q-fec", .data = &fec_devtype[IMX6Q_FEC], }, |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 146 | { .compatible = "fsl,mvf600-fec", .data = &fec_devtype[MVF600_FEC], }, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 147 | { /* sentinel */ } |
| 148 | }; |
| 149 | MODULE_DEVICE_TABLE(of, fec_dt_ids); |
| 150 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 151 | static unsigned char macaddr[ETH_ALEN]; |
| 152 | module_param_array(macaddr, byte, NULL, 0); |
| 153 | MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address"); |
| 154 | |
Greg Ungerer | 87f4abb | 2008-06-06 15:55:36 +1000 | [diff] [blame] | 155 | #if defined(CONFIG_M5272) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | /* |
| 157 | * Some hardware gets it MAC address out of local flash memory. |
| 158 | * if this is non-zero then assume it is the address to get MAC from. |
| 159 | */ |
| 160 | #if defined(CONFIG_NETtel) |
| 161 | #define FEC_FLASHMAC 0xf0006006 |
| 162 | #elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES) |
| 163 | #define FEC_FLASHMAC 0xf0006000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | #elif defined(CONFIG_CANCam) |
| 165 | #define FEC_FLASHMAC 0xf0020000 |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 166 | #elif defined (CONFIG_M5272C3) |
| 167 | #define FEC_FLASHMAC (0xffe04000 + 4) |
| 168 | #elif defined(CONFIG_MOD5272) |
Lothar Waßmann | a7dd321 | 2011-12-07 21:59:25 +0000 | [diff] [blame] | 169 | #define FEC_FLASHMAC 0xffc0406b |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | #else |
| 171 | #define FEC_FLASHMAC 0 |
| 172 | #endif |
Greg Ungerer | 43be636 | 2009-02-26 22:42:51 -0800 | [diff] [blame] | 173 | #endif /* CONFIG_M5272 */ |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 174 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 175 | #if (((RX_RING_SIZE + TX_RING_SIZE) * 32) > PAGE_SIZE) |
Matt Waddel | 6b26529 | 2006-06-27 13:10:56 +1000 | [diff] [blame] | 176 | #error "FEC: descriptor ring size constants too large" |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 177 | #endif |
| 178 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 179 | /* Interrupt events/masks. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | #define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */ |
| 181 | #define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */ |
| 182 | #define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */ |
| 183 | #define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */ |
| 184 | #define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */ |
| 185 | #define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */ |
| 186 | #define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */ |
| 187 | #define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */ |
| 188 | #define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */ |
| 189 | #define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */ |
| 190 | |
Wolfram Sang | 4bee1f9 | 2010-07-21 02:51:13 +0000 | [diff] [blame] | 191 | #define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII) |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 192 | #define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF)) |
Wolfram Sang | 4bee1f9 | 2010-07-21 02:51:13 +0000 | [diff] [blame] | 193 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 194 | /* The FEC stores dest/src/type/vlan, data, and checksum for receive packets. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | */ |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 196 | #define PKT_MAXBUF_SIZE 1522 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | #define PKT_MINBUF_SIZE 64 |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 198 | #define PKT_MAXBLR_SIZE 1536 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 200 | /* FEC receive acceleration */ |
| 201 | #define FEC_RACC_IPDIS (1 << 1) |
| 202 | #define FEC_RACC_PRODIS (1 << 2) |
| 203 | #define FEC_RACC_OPTIONS (FEC_RACC_IPDIS | FEC_RACC_PRODIS) |
| 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | /* |
Matt Waddel | 6b26529 | 2006-06-27 13:10:56 +1000 | [diff] [blame] | 206 | * The 5270/5271/5280/5282/532x RX control register also contains maximum frame |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | * size bits. Other FEC hardware does not, so we need to take that into |
| 208 | * account when setting it. |
| 209 | */ |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 210 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ |
Uwe Kleine-König | 085e79e | 2011-01-17 09:52:18 +0100 | [diff] [blame] | 211 | defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) |
| 213 | #else |
| 214 | #define OPT_FRAME_SIZE 0 |
| 215 | #endif |
| 216 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 217 | /* FEC MII MMFR bits definition */ |
| 218 | #define FEC_MMFR_ST (1 << 30) |
| 219 | #define FEC_MMFR_OP_READ (2 << 28) |
| 220 | #define FEC_MMFR_OP_WRITE (1 << 28) |
| 221 | #define FEC_MMFR_PA(v) ((v & 0x1f) << 23) |
| 222 | #define FEC_MMFR_RA(v) ((v & 0x1f) << 18) |
| 223 | #define FEC_MMFR_TA (2 << 16) |
| 224 | #define FEC_MMFR_DATA(v) (v & 0xffff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
Rogerio Pimentel | c3b084c | 2011-12-27 14:07:37 -0500 | [diff] [blame] | 226 | #define FEC_MII_TIMEOUT 30000 /* us */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 228 | /* Transmitter timeout */ |
| 229 | #define TX_TIMEOUT (2 * HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 231 | #define FEC_PAUSE_FLAG_AUTONEG 0x1 |
| 232 | #define FEC_PAUSE_FLAG_ENABLE 0x2 |
| 233 | |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 234 | static int mii_cnt; |
| 235 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 236 | static inline |
| 237 | struct bufdesc *fec_enet_get_nextdesc(struct bufdesc *bdp, struct fec_enet_private *fep) |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 238 | { |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 239 | struct bufdesc *new_bd = bdp + 1; |
| 240 | struct bufdesc_ex *ex_new_bd = (struct bufdesc_ex *)bdp + 1; |
| 241 | struct bufdesc_ex *ex_base; |
| 242 | struct bufdesc *base; |
| 243 | int ring_size; |
| 244 | |
| 245 | if (bdp >= fep->tx_bd_base) { |
| 246 | base = fep->tx_bd_base; |
| 247 | ring_size = fep->tx_ring_size; |
| 248 | ex_base = (struct bufdesc_ex *)fep->tx_bd_base; |
| 249 | } else { |
| 250 | base = fep->rx_bd_base; |
| 251 | ring_size = fep->rx_ring_size; |
| 252 | ex_base = (struct bufdesc_ex *)fep->rx_bd_base; |
| 253 | } |
| 254 | |
| 255 | if (fep->bufdesc_ex) |
| 256 | return (struct bufdesc *)((ex_new_bd >= (ex_base + ring_size)) ? |
| 257 | ex_base : ex_new_bd); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 258 | else |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 259 | return (new_bd >= (base + ring_size)) ? |
| 260 | base : new_bd; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 261 | } |
| 262 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 263 | static inline |
| 264 | struct bufdesc *fec_enet_get_prevdesc(struct bufdesc *bdp, struct fec_enet_private *fep) |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 265 | { |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 266 | struct bufdesc *new_bd = bdp - 1; |
| 267 | struct bufdesc_ex *ex_new_bd = (struct bufdesc_ex *)bdp - 1; |
| 268 | struct bufdesc_ex *ex_base; |
| 269 | struct bufdesc *base; |
| 270 | int ring_size; |
| 271 | |
| 272 | if (bdp >= fep->tx_bd_base) { |
| 273 | base = fep->tx_bd_base; |
| 274 | ring_size = fep->tx_ring_size; |
| 275 | ex_base = (struct bufdesc_ex *)fep->tx_bd_base; |
| 276 | } else { |
| 277 | base = fep->rx_bd_base; |
| 278 | ring_size = fep->rx_ring_size; |
| 279 | ex_base = (struct bufdesc_ex *)fep->rx_bd_base; |
| 280 | } |
| 281 | |
| 282 | if (fep->bufdesc_ex) |
| 283 | return (struct bufdesc *)((ex_new_bd < ex_base) ? |
| 284 | (ex_new_bd + ring_size) : ex_new_bd); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 285 | else |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 286 | return (new_bd < base) ? (new_bd + ring_size) : new_bd; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 289 | static void *swap_buffer(void *bufaddr, int len) |
| 290 | { |
| 291 | int i; |
| 292 | unsigned int *buf = bufaddr; |
| 293 | |
Fabio Estevam | ffed61e | 2013-05-21 05:44:26 +0000 | [diff] [blame] | 294 | for (i = 0; i < DIV_ROUND_UP(len, 4); i++, buf++) |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 295 | *buf = cpu_to_be32(*buf); |
| 296 | |
| 297 | return bufaddr; |
| 298 | } |
| 299 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 300 | static int |
| 301 | fec_enet_clear_csum(struct sk_buff *skb, struct net_device *ndev) |
| 302 | { |
| 303 | /* Only run for packets requiring a checksum. */ |
| 304 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 305 | return 0; |
| 306 | |
| 307 | if (unlikely(skb_cow_head(skb, 0))) |
| 308 | return -1; |
| 309 | |
| 310 | *(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) = 0; |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
Denis Kirjanov | c7621cb | 2010-06-02 09:15:47 +0000 | [diff] [blame] | 315 | static netdev_tx_t |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 316 | fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 318 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 319 | const struct platform_device_id *id_entry = |
| 320 | platform_get_device_id(fep->pdev); |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 321 | struct bufdesc *bdp, *bdp_pre; |
Greg Ungerer | 9555b31 | 2009-08-06 17:58:18 +0000 | [diff] [blame] | 322 | void *bufaddr; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 323 | unsigned short status; |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 324 | unsigned int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | /* Fill in a Tx ring entry */ |
| 327 | bdp = fep->cur_tx; |
| 328 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 329 | status = bdp->cbd_sc; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 330 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 331 | if (status & BD_ENET_TX_READY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | /* Ooops. All transmit buffers are full. Bail out. |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 333 | * This should not happen, since ndev->tbusy should be set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | */ |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 335 | netdev_err(ndev, "tx queue full!\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 336 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 339 | /* Protocol checksum off-load for TCP and UDP. */ |
| 340 | if (fec_enet_clear_csum(skb, ndev)) { |
| 341 | kfree_skb(skb); |
| 342 | return NETDEV_TX_OK; |
| 343 | } |
| 344 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 345 | /* Clear all of the status flags */ |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 346 | status &= ~BD_ENET_TX_STATS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 348 | /* Set buffer length and buffer pointer */ |
Greg Ungerer | 9555b31 | 2009-08-06 17:58:18 +0000 | [diff] [blame] | 349 | bufaddr = skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | bdp->cbd_datlen = skb->len; |
| 351 | |
| 352 | /* |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 353 | * On some FEC implementations data must be aligned on |
| 354 | * 4-byte boundaries. Use bounce buffers to copy data |
| 355 | * and get it aligned. Ugh. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | */ |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 357 | if (fep->bufdesc_ex) |
| 358 | index = (struct bufdesc_ex *)bdp - |
| 359 | (struct bufdesc_ex *)fep->tx_bd_base; |
| 360 | else |
| 361 | index = bdp - fep->tx_bd_base; |
| 362 | |
Greg Ungerer | 9555b31 | 2009-08-06 17:58:18 +0000 | [diff] [blame] | 363 | if (((unsigned long) bufaddr) & FEC_ALIGNMENT) { |
Uwe Kleine-König | 8a73b0b | 2011-01-13 21:34:31 +0100 | [diff] [blame] | 364 | memcpy(fep->tx_bounce[index], skb->data, skb->len); |
Greg Ungerer | 9555b31 | 2009-08-06 17:58:18 +0000 | [diff] [blame] | 365 | bufaddr = fep->tx_bounce[index]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 368 | /* |
| 369 | * Some design made an incorrect assumption on endian mode of |
| 370 | * the system that it's running on. As the result, driver has to |
| 371 | * swap every frame going to and coming from the controller. |
| 372 | */ |
| 373 | if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) |
| 374 | swap_buffer(bufaddr, skb->len); |
| 375 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 376 | /* Save skb pointer */ |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 377 | fep->tx_skbuff[index] = skb; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | /* Push the data cache so the CPM does not get stale memory |
| 380 | * data. |
| 381 | */ |
Uwe Kleine-König | d1ab1f5 | 2011-01-20 09:26:38 +0100 | [diff] [blame] | 382 | bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, bufaddr, |
Sebastian Siewior | 2488a54 | 2013-12-02 10:52:55 +0100 | [diff] [blame] | 383 | skb->len, DMA_TO_DEVICE); |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 384 | if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) { |
| 385 | bdp->cbd_bufaddr = 0; |
| 386 | fep->tx_skbuff[index] = NULL; |
| 387 | dev_kfree_skb_any(skb); |
| 388 | if (net_ratelimit()) |
| 389 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
| 390 | return NETDEV_TX_OK; |
| 391 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 393 | if (fep->bufdesc_ex) { |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 394 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 395 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
| 396 | ebdp->cbd_bdu = 0; |
| 397 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && |
| 398 | fep->hwts_tx_en)) { |
| 399 | ebdp->cbd_esc = (BD_ENET_TX_TS | BD_ENET_TX_INT); |
| 400 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
| 401 | } else { |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 402 | ebdp->cbd_esc = BD_ENET_TX_INT; |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 403 | |
| 404 | /* Enable protocol checksum flags |
| 405 | * We do not bother with the IP Checksum bits as they |
| 406 | * are done by the kernel |
| 407 | */ |
| 408 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 409 | ebdp->cbd_esc |= BD_ENET_TX_PINS; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 410 | } |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 411 | } |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 412 | |
Duan Fugang-B38611 | fb8ef78 | 2014-02-20 18:14:39 +0800 | [diff] [blame] | 413 | /* Send it on its way. Tell FEC it's ready, interrupt when done, |
| 414 | * it's the last BD of the frame, and to put the CRC on the end. |
| 415 | */ |
| 416 | status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR |
| 417 | | BD_ENET_TX_LAST | BD_ENET_TX_TC); |
| 418 | bdp->cbd_sc = status; |
| 419 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 420 | bdp_pre = fec_enet_get_prevdesc(bdp, fep); |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 421 | if ((id_entry->driver_data & FEC_QUIRK_ERR006358) && |
| 422 | !(bdp_pre->cbd_sc & BD_ENET_TX_READY)) { |
| 423 | fep->delay_work.trig_tx = true; |
| 424 | schedule_delayed_work(&(fep->delay_work.delay_work), |
| 425 | msecs_to_jiffies(1)); |
| 426 | } |
| 427 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 428 | /* If this was the last BD in the ring, start at the beginning again. */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 429 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
Eric Dumazet | 7a2a845 | 2013-12-19 10:53:02 -0800 | [diff] [blame] | 431 | skb_tx_timestamp(skb); |
| 432 | |
Sascha Hauer | 2e28532 | 2009-04-15 01:32:16 +0000 | [diff] [blame] | 433 | fep->cur_tx = bdp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 435 | if (fep->cur_tx == fep->dirty_tx) |
| 436 | netif_stop_queue(ndev); |
Richard Cochran | 18a03b9 | 2011-06-12 02:18:59 +0000 | [diff] [blame] | 437 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 438 | /* Trigger transmission start */ |
| 439 | writel(0, fep->hwp + FEC_X_DES_ACTIVE); |
| 440 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 441 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
| 443 | |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 444 | /* Init RX & TX buffer descriptors |
| 445 | */ |
| 446 | static void fec_enet_bd_init(struct net_device *dev) |
| 447 | { |
| 448 | struct fec_enet_private *fep = netdev_priv(dev); |
| 449 | struct bufdesc *bdp; |
| 450 | unsigned int i; |
| 451 | |
| 452 | /* Initialize the receive buffer descriptors. */ |
| 453 | bdp = fep->rx_bd_base; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 454 | for (i = 0; i < fep->rx_ring_size; i++) { |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 455 | |
| 456 | /* Initialize the BD for every fragment in the page. */ |
| 457 | if (bdp->cbd_bufaddr) |
| 458 | bdp->cbd_sc = BD_ENET_RX_EMPTY; |
| 459 | else |
| 460 | bdp->cbd_sc = 0; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 461 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | /* Set the last buffer to wrap */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 465 | bdp = fec_enet_get_prevdesc(bdp, fep); |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 466 | bdp->cbd_sc |= BD_SC_WRAP; |
| 467 | |
| 468 | fep->cur_rx = fep->rx_bd_base; |
| 469 | |
| 470 | /* ...and the same for transmit */ |
| 471 | bdp = fep->tx_bd_base; |
| 472 | fep->cur_tx = bdp; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 473 | for (i = 0; i < fep->tx_ring_size; i++) { |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 474 | |
| 475 | /* Initialize the BD for every fragment in the page. */ |
| 476 | bdp->cbd_sc = 0; |
| 477 | if (bdp->cbd_bufaddr && fep->tx_skbuff[i]) { |
| 478 | dev_kfree_skb_any(fep->tx_skbuff[i]); |
| 479 | fep->tx_skbuff[i] = NULL; |
| 480 | } |
| 481 | bdp->cbd_bufaddr = 0; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 482 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | /* Set the last buffer to wrap */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 486 | bdp = fec_enet_get_prevdesc(bdp, fep); |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 487 | bdp->cbd_sc |= BD_SC_WRAP; |
| 488 | fep->dirty_tx = bdp; |
| 489 | } |
| 490 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 491 | /* This function is called to start or restart the FEC during a link |
| 492 | * change. This only happens when switching between half and full |
| 493 | * duplex. |
| 494 | */ |
| 495 | static void |
| 496 | fec_restart(struct net_device *ndev, int duplex) |
| 497 | { |
| 498 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 499 | const struct platform_device_id *id_entry = |
| 500 | platform_get_device_id(fep->pdev); |
| 501 | int i; |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 502 | u32 val; |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 503 | u32 temp_mac[2]; |
| 504 | u32 rcntl = OPT_FRAME_SIZE | 0x04; |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 505 | u32 ecntl = 0x2; /* ETHEREN */ |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 506 | |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 507 | if (netif_running(ndev)) { |
| 508 | netif_device_detach(ndev); |
| 509 | napi_disable(&fep->napi); |
| 510 | netif_stop_queue(ndev); |
Fabio Estevam | 3169134 | 2013-05-15 07:06:26 +0000 | [diff] [blame] | 511 | netif_tx_lock_bh(ndev); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 512 | } |
| 513 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 514 | /* Whack a reset. We should wait for this. */ |
| 515 | writel(1, fep->hwp + FEC_ECNTRL); |
| 516 | udelay(10); |
| 517 | |
| 518 | /* |
| 519 | * enet-mac reset will reset mac address registers too, |
| 520 | * so need to reconfigure it. |
| 521 | */ |
| 522 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { |
| 523 | memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN); |
| 524 | writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW); |
| 525 | writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH); |
| 526 | } |
| 527 | |
| 528 | /* Clear any outstanding interrupt. */ |
| 529 | writel(0xffc00000, fep->hwp + FEC_IEVENT); |
| 530 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 531 | /* Set maximum receive buffer size. */ |
| 532 | writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE); |
| 533 | |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 534 | fec_enet_bd_init(ndev); |
| 535 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 536 | /* Set receive and transmit descriptor base. */ |
| 537 | writel(fep->bd_dma, fep->hwp + FEC_R_DES_START); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 538 | if (fep->bufdesc_ex) |
| 539 | writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc_ex) |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 540 | * fep->rx_ring_size, fep->hwp + FEC_X_DES_START); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 541 | else |
| 542 | writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 543 | * fep->rx_ring_size, fep->hwp + FEC_X_DES_START); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 544 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 545 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 546 | for (i = 0; i <= TX_RING_MOD_MASK; i++) { |
| 547 | if (fep->tx_skbuff[i]) { |
| 548 | dev_kfree_skb_any(fep->tx_skbuff[i]); |
| 549 | fep->tx_skbuff[i] = NULL; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* Enable MII mode */ |
| 554 | if (duplex) { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 555 | /* FD enable */ |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 556 | writel(0x04, fep->hwp + FEC_X_CNTRL); |
| 557 | } else { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 558 | /* No Rcv on Xmit */ |
| 559 | rcntl |= 0x02; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 560 | writel(0x0, fep->hwp + FEC_X_CNTRL); |
| 561 | } |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 562 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 563 | fep->full_duplex = duplex; |
| 564 | |
| 565 | /* Set MII speed */ |
| 566 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 567 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 568 | #if !defined(CONFIG_M5272) |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 569 | /* set RX checksum */ |
| 570 | val = readl(fep->hwp + FEC_RACC); |
| 571 | if (fep->csum_flags & FLAG_RX_CSUM_ENABLED) |
| 572 | val |= FEC_RACC_OPTIONS; |
| 573 | else |
| 574 | val &= ~FEC_RACC_OPTIONS; |
| 575 | writel(val, fep->hwp + FEC_RACC); |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 576 | #endif |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 577 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 578 | /* |
| 579 | * The phy interface and speed need to get configured |
| 580 | * differently on enet-mac. |
| 581 | */ |
| 582 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 583 | /* Enable flow control and length check */ |
| 584 | rcntl |= 0x40000000 | 0x00000020; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 585 | |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 586 | /* RGMII, RMII or MII */ |
| 587 | if (fep->phy_interface == PHY_INTERFACE_MODE_RGMII) |
| 588 | rcntl |= (1 << 6); |
| 589 | else if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 590 | rcntl |= (1 << 8); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 591 | else |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 592 | rcntl &= ~(1 << 8); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 593 | |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 594 | /* 1G, 100M or 10M */ |
| 595 | if (fep->phy_dev) { |
| 596 | if (fep->phy_dev->speed == SPEED_1000) |
| 597 | ecntl |= (1 << 5); |
| 598 | else if (fep->phy_dev->speed == SPEED_100) |
| 599 | rcntl &= ~(1 << 9); |
| 600 | else |
| 601 | rcntl |= (1 << 9); |
| 602 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 603 | } else { |
| 604 | #ifdef FEC_MIIGSK_ENR |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 605 | if (id_entry->driver_data & FEC_QUIRK_USE_GASKET) { |
Eric Benard | 8d82f21 | 2012-01-12 06:10:28 +0000 | [diff] [blame] | 606 | u32 cfgr; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 607 | /* disable the gasket and wait */ |
| 608 | writel(0, fep->hwp + FEC_MIIGSK_ENR); |
| 609 | while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4) |
| 610 | udelay(1); |
| 611 | |
| 612 | /* |
| 613 | * configure the gasket: |
| 614 | * RMII, 50 MHz, no loopback, no echo |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 615 | * MII, 25 MHz, no loopback, no echo |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 616 | */ |
Eric Benard | 8d82f21 | 2012-01-12 06:10:28 +0000 | [diff] [blame] | 617 | cfgr = (fep->phy_interface == PHY_INTERFACE_MODE_RMII) |
| 618 | ? BM_MIIGSK_CFGR_RMII : BM_MIIGSK_CFGR_MII; |
| 619 | if (fep->phy_dev && fep->phy_dev->speed == SPEED_10) |
| 620 | cfgr |= BM_MIIGSK_CFGR_FRCONT_10M; |
| 621 | writel(cfgr, fep->hwp + FEC_MIIGSK_CFGR); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 622 | |
| 623 | /* re-enable the gasket */ |
| 624 | writel(2, fep->hwp + FEC_MIIGSK_ENR); |
| 625 | } |
| 626 | #endif |
| 627 | } |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 628 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 629 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 630 | /* enable pause frame*/ |
| 631 | if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) || |
| 632 | ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) && |
| 633 | fep->phy_dev && fep->phy_dev->pause)) { |
| 634 | rcntl |= FEC_ENET_FCE; |
| 635 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 636 | /* set FIFO threshold parameter to reduce overrun */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 637 | writel(FEC_ENET_RSEM_V, fep->hwp + FEC_R_FIFO_RSEM); |
| 638 | writel(FEC_ENET_RSFL_V, fep->hwp + FEC_R_FIFO_RSFL); |
| 639 | writel(FEC_ENET_RAEM_V, fep->hwp + FEC_R_FIFO_RAEM); |
| 640 | writel(FEC_ENET_RAFL_V, fep->hwp + FEC_R_FIFO_RAFL); |
| 641 | |
| 642 | /* OPD */ |
| 643 | writel(FEC_ENET_OPD_V, fep->hwp + FEC_OPD); |
| 644 | } else { |
| 645 | rcntl &= ~FEC_ENET_FCE; |
| 646 | } |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 647 | #endif /* !defined(CONFIG_M5272) */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 648 | |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 649 | writel(rcntl, fep->hwp + FEC_R_CNTRL); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 650 | |
Stefan Wahren | 84fe618 | 2014-03-12 11:28:19 +0100 | [diff] [blame^] | 651 | /* Setup multicast filter. */ |
| 652 | set_multicast_list(ndev); |
| 653 | #ifndef CONFIG_M5272 |
| 654 | writel(0, fep->hwp + FEC_HASH_TABLE_HIGH); |
| 655 | writel(0, fep->hwp + FEC_HASH_TABLE_LOW); |
| 656 | #endif |
| 657 | |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 658 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { |
| 659 | /* enable ENET endian swap */ |
| 660 | ecntl |= (1 << 8); |
| 661 | /* enable ENET store and forward mode */ |
| 662 | writel(1 << 8, fep->hwp + FEC_X_WMRK); |
| 663 | } |
| 664 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 665 | if (fep->bufdesc_ex) |
| 666 | ecntl |= (1 << 4); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 667 | |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 668 | #ifndef CONFIG_M5272 |
Jim Baxter | b9eef55 | 2013-07-01 14:57:54 +0100 | [diff] [blame] | 669 | /* Enable the MIB statistic event counters */ |
| 670 | writel(0 << 31, fep->hwp + FEC_MIB_CTRLSTAT); |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 671 | #endif |
| 672 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 673 | /* And last, enable the transmit and receive processing */ |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 674 | writel(ecntl, fep->hwp + FEC_ECNTRL); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 675 | writel(0, fep->hwp + FEC_R_DES_ACTIVE); |
| 676 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 677 | if (fep->bufdesc_ex) |
| 678 | fec_ptp_start_cyclecounter(ndev); |
| 679 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 680 | /* Enable interrupts we wish to service */ |
| 681 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 682 | |
| 683 | if (netif_running(ndev)) { |
Fabio Estevam | 3169134 | 2013-05-15 07:06:26 +0000 | [diff] [blame] | 684 | netif_tx_unlock_bh(ndev); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 685 | netif_wake_queue(ndev); |
Fabio Estevam | 1ed0d56 | 2013-05-15 07:06:27 +0000 | [diff] [blame] | 686 | napi_enable(&fep->napi); |
| 687 | netif_device_attach(ndev); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 688 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | static void |
| 692 | fec_stop(struct net_device *ndev) |
| 693 | { |
| 694 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 695 | const struct platform_device_id *id_entry = |
| 696 | platform_get_device_id(fep->pdev); |
Lothar Waßmann | 42431dc | 2011-12-07 21:59:30 +0000 | [diff] [blame] | 697 | u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 698 | |
| 699 | /* We cannot expect a graceful transmit stop without link !!! */ |
| 700 | if (fep->link) { |
| 701 | writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */ |
| 702 | udelay(10); |
| 703 | if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA)) |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 704 | netdev_err(ndev, "Graceful transmit stop did not complete!\n"); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | /* Whack a reset. We should wait for this. */ |
| 708 | writel(1, fep->hwp + FEC_ECNTRL); |
| 709 | udelay(10); |
| 710 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 711 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 712 | |
| 713 | /* We have to keep ENET enabled to have MII interrupt stay working */ |
Lothar Waßmann | 42431dc | 2011-12-07 21:59:30 +0000 | [diff] [blame] | 714 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 715 | writel(2, fep->hwp + FEC_ECNTRL); |
Lothar Waßmann | 42431dc | 2011-12-07 21:59:30 +0000 | [diff] [blame] | 716 | writel(rmii_mode, fep->hwp + FEC_R_CNTRL); |
| 717 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 718 | } |
| 719 | |
| 720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | static void |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 722 | fec_timeout(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 724 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 726 | ndev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 728 | fep->delay_work.timeout = true; |
| 729 | schedule_delayed_work(&(fep->delay_work.delay_work), 0); |
| 730 | } |
| 731 | |
| 732 | static void fec_enet_work(struct work_struct *work) |
| 733 | { |
| 734 | struct fec_enet_private *fep = |
| 735 | container_of(work, |
| 736 | struct fec_enet_private, |
| 737 | delay_work.delay_work.work); |
| 738 | |
| 739 | if (fep->delay_work.timeout) { |
| 740 | fep->delay_work.timeout = false; |
| 741 | fec_restart(fep->netdev, fep->full_duplex); |
| 742 | netif_wake_queue(fep->netdev); |
| 743 | } |
Frank Li | 0319165 | 2013-07-25 14:05:53 +0800 | [diff] [blame] | 744 | |
| 745 | if (fep->delay_work.trig_tx) { |
| 746 | fep->delay_work.trig_tx = false; |
| 747 | writel(0, fep->hwp + FEC_X_DES_ACTIVE); |
| 748 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | } |
| 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | static void |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 752 | fec_enet_tx(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | { |
| 754 | struct fec_enet_private *fep; |
Sascha Hauer | 2e28532 | 2009-04-15 01:32:16 +0000 | [diff] [blame] | 755 | struct bufdesc *bdp; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 756 | unsigned short status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | struct sk_buff *skb; |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 758 | int index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 760 | fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | bdp = fep->dirty_tx; |
| 762 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 763 | /* get next bdp of dirty_tx */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 764 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 765 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 766 | while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) { |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 767 | |
| 768 | /* current queue is empty */ |
| 769 | if (bdp == fep->cur_tx) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 770 | break; |
| 771 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 772 | if (fep->bufdesc_ex) |
| 773 | index = (struct bufdesc_ex *)bdp - |
| 774 | (struct bufdesc_ex *)fep->tx_bd_base; |
| 775 | else |
| 776 | index = bdp - fep->tx_bd_base; |
| 777 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 778 | skb = fep->tx_skbuff[index]; |
Sebastian Siewior | 2488a54 | 2013-12-02 10:52:55 +0100 | [diff] [blame] | 779 | dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, skb->len, |
| 780 | DMA_TO_DEVICE); |
| 781 | bdp->cbd_bufaddr = 0; |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 782 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | /* Check for errors. */ |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 784 | if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | BD_ENET_TX_RL | BD_ENET_TX_UN | |
| 786 | BD_ENET_TX_CSL)) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 787 | ndev->stats.tx_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 788 | if (status & BD_ENET_TX_HB) /* No heartbeat */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 789 | ndev->stats.tx_heartbeat_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 790 | if (status & BD_ENET_TX_LC) /* Late collision */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 791 | ndev->stats.tx_window_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 792 | if (status & BD_ENET_TX_RL) /* Retrans limit */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 793 | ndev->stats.tx_aborted_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 794 | if (status & BD_ENET_TX_UN) /* Underrun */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 795 | ndev->stats.tx_fifo_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 796 | if (status & BD_ENET_TX_CSL) /* Carrier lost */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 797 | ndev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | } else { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 799 | ndev->stats.tx_packets++; |
Jim Baxter | 06efce7 | 2013-06-27 19:25:08 +0100 | [diff] [blame] | 800 | ndev->stats.tx_bytes += bdp->cbd_datlen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | } |
| 802 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 803 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) && |
| 804 | fep->bufdesc_ex) { |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 805 | struct skb_shared_hwtstamps shhwtstamps; |
| 806 | unsigned long flags; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 807 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 808 | |
| 809 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); |
| 810 | spin_lock_irqsave(&fep->tmreg_lock, flags); |
| 811 | shhwtstamps.hwtstamp = ns_to_ktime( |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 812 | timecounter_cyc2time(&fep->tc, ebdp->ts)); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 813 | spin_unlock_irqrestore(&fep->tmreg_lock, flags); |
| 814 | skb_tstamp_tx(skb, &shhwtstamps); |
| 815 | } |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 816 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 817 | if (status & BD_ENET_TX_READY) |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 818 | netdev_err(ndev, "HEY! Enet xmit interrupt and TX_READY\n"); |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | /* Deferred means some collisions occurred during transmit, |
| 821 | * but we eventually sent the packet OK. |
| 822 | */ |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 823 | if (status & BD_ENET_TX_DEF) |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 824 | ndev->stats.collisions++; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 825 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 826 | /* Free the sk buffer associated with this last transmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | dev_kfree_skb_any(skb); |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 828 | fep->tx_skbuff[index] = NULL; |
| 829 | |
| 830 | fep->dirty_tx = bdp; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 831 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 832 | /* Update pointer to next buffer descriptor to be transmitted */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 833 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 834 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 835 | /* Since we have freed up a buffer, the ring is no longer full |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | */ |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 837 | if (fep->dirty_tx != fep->cur_tx) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 838 | if (netif_queue_stopped(ndev)) |
| 839 | netif_wake_queue(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | } |
| 841 | } |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 842 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | |
| 846 | /* During a receive, the cur_rx points to the current incoming buffer. |
| 847 | * When we update through the ring, if the next incoming buffer has |
| 848 | * not been given to the system, we just set the empty indicator, |
| 849 | * effectively tossing the packet. |
| 850 | */ |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 851 | static int |
| 852 | fec_enet_rx(struct net_device *ndev, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 854 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 855 | const struct platform_device_id *id_entry = |
| 856 | platform_get_device_id(fep->pdev); |
Sascha Hauer | 2e28532 | 2009-04-15 01:32:16 +0000 | [diff] [blame] | 857 | struct bufdesc *bdp; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 858 | unsigned short status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | struct sk_buff *skb; |
| 860 | ushort pkt_len; |
| 861 | __u8 *data; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 862 | int pkt_received = 0; |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 863 | struct bufdesc_ex *ebdp = NULL; |
| 864 | bool vlan_packet_rcvd = false; |
| 865 | u16 vlan_tag; |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 866 | int index = 0; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 867 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 868 | #ifdef CONFIG_M532x |
| 869 | flush_cache_all(); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 870 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | /* First, grab all of the stats for the incoming packet. |
| 873 | * These get messed up if we get called due to a busy condition. |
| 874 | */ |
| 875 | bdp = fep->cur_rx; |
| 876 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 877 | while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 879 | if (pkt_received >= budget) |
| 880 | break; |
| 881 | pkt_received++; |
| 882 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 883 | /* Since we have allocated space to hold a complete frame, |
| 884 | * the last indicator should be set. |
| 885 | */ |
| 886 | if ((status & BD_ENET_RX_LAST) == 0) |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 887 | netdev_err(ndev, "rcv is not +last\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 889 | if (!fep->opened) |
| 890 | goto rx_processing_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 892 | /* Check for errors. */ |
| 893 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | BD_ENET_RX_CR | BD_ENET_RX_OV)) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 895 | ndev->stats.rx_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 896 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) { |
| 897 | /* Frame too long or too short. */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 898 | ndev->stats.rx_length_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 899 | } |
| 900 | if (status & BD_ENET_RX_NO) /* Frame alignment */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 901 | ndev->stats.rx_frame_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 902 | if (status & BD_ENET_RX_CR) /* CRC Error */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 903 | ndev->stats.rx_crc_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 904 | if (status & BD_ENET_RX_OV) /* FIFO overrun */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 905 | ndev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 907 | |
| 908 | /* Report late collisions as a frame error. |
| 909 | * On this error, the BD is closed, but we don't know what we |
| 910 | * have in the buffer. So, just drop this frame on the floor. |
| 911 | */ |
| 912 | if (status & BD_ENET_RX_CL) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 913 | ndev->stats.rx_errors++; |
| 914 | ndev->stats.rx_frame_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 915 | goto rx_processing_done; |
| 916 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 918 | /* Process the incoming frame. */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 919 | ndev->stats.rx_packets++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 920 | pkt_len = bdp->cbd_datlen; |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 921 | ndev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 923 | if (fep->bufdesc_ex) |
| 924 | index = (struct bufdesc_ex *)bdp - |
| 925 | (struct bufdesc_ex *)fep->rx_bd_base; |
| 926 | else |
| 927 | index = bdp - fep->rx_bd_base; |
| 928 | data = fep->rx_skbuff[index]->data; |
| 929 | dma_sync_single_for_cpu(&fep->pdev->dev, bdp->cbd_bufaddr, |
| 930 | FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); |
Sascha Hauer | ccdc4f1 | 2009-01-28 23:03:09 +0000 | [diff] [blame] | 931 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 932 | if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) |
| 933 | swap_buffer(data, pkt_len); |
| 934 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 935 | /* Extract the enhanced buffer descriptor */ |
| 936 | ebdp = NULL; |
| 937 | if (fep->bufdesc_ex) |
| 938 | ebdp = (struct bufdesc_ex *)bdp; |
| 939 | |
| 940 | /* If this is a VLAN packet remove the VLAN Tag */ |
| 941 | vlan_packet_rcvd = false; |
| 942 | if ((ndev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
| 943 | fep->bufdesc_ex && (ebdp->cbd_esc & BD_ENET_RX_VLAN)) { |
| 944 | /* Push and remove the vlan tag */ |
| 945 | struct vlan_hdr *vlan_header = |
| 946 | (struct vlan_hdr *) (data + ETH_HLEN); |
| 947 | vlan_tag = ntohs(vlan_header->h_vlan_TCI); |
| 948 | pkt_len -= VLAN_HLEN; |
| 949 | |
| 950 | vlan_packet_rcvd = true; |
| 951 | } |
| 952 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 953 | /* This does 16 byte alignment, exactly what we need. |
| 954 | * The packet length includes FCS, but we don't want to |
| 955 | * include that when passing upstream as it messes up |
| 956 | * bridging applications. |
| 957 | */ |
Fabio Estevam | b72061a | 2012-02-07 08:27:31 +0000 | [diff] [blame] | 958 | skb = netdev_alloc_skb(ndev, pkt_len - 4 + NET_IP_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
Sascha Hauer | 8549889 | 2009-04-15 01:32:21 +0000 | [diff] [blame] | 960 | if (unlikely(!skb)) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 961 | ndev->stats.rx_dropped++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 962 | } else { |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 963 | int payload_offset = (2 * ETH_ALEN); |
Sascha Hauer | 8549889 | 2009-04-15 01:32:21 +0000 | [diff] [blame] | 964 | skb_reserve(skb, NET_IP_ALIGN); |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 965 | skb_put(skb, pkt_len - 4); /* Make room */ |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 966 | |
| 967 | /* Extract the frame data without the VLAN header. */ |
| 968 | skb_copy_to_linear_data(skb, data, (2 * ETH_ALEN)); |
| 969 | if (vlan_packet_rcvd) |
| 970 | payload_offset = (2 * ETH_ALEN) + VLAN_HLEN; |
| 971 | skb_copy_to_linear_data_offset(skb, (2 * ETH_ALEN), |
| 972 | data + payload_offset, |
| 973 | pkt_len - 4 - (2 * ETH_ALEN)); |
| 974 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 975 | skb->protocol = eth_type_trans(skb, ndev); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 976 | |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 977 | /* Get receive timestamp from the skb */ |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 978 | if (fep->hwts_rx_en && fep->bufdesc_ex) { |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 979 | struct skb_shared_hwtstamps *shhwtstamps = |
| 980 | skb_hwtstamps(skb); |
| 981 | unsigned long flags; |
| 982 | |
| 983 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
| 984 | |
| 985 | spin_lock_irqsave(&fep->tmreg_lock, flags); |
| 986 | shhwtstamps->hwtstamp = ns_to_ktime( |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 987 | timecounter_cyc2time(&fep->tc, ebdp->ts)); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 988 | spin_unlock_irqrestore(&fep->tmreg_lock, flags); |
| 989 | } |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 990 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 991 | if (fep->bufdesc_ex && |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 992 | (fep->csum_flags & FLAG_RX_CSUM_ENABLED)) { |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 993 | if (!(ebdp->cbd_esc & FLAG_RX_CSUM_ERROR)) { |
| 994 | /* don't check it */ |
| 995 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 996 | } else { |
| 997 | skb_checksum_none_assert(skb); |
| 998 | } |
| 999 | } |
| 1000 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1001 | /* Handle received VLAN packets */ |
| 1002 | if (vlan_packet_rcvd) |
| 1003 | __vlan_hwaccel_put_tag(skb, |
| 1004 | htons(ETH_P_8021Q), |
| 1005 | vlan_tag); |
| 1006 | |
Richard Cochran | 0affdf3 | 2013-08-30 20:28:10 +0200 | [diff] [blame] | 1007 | napi_gro_receive(&fep->napi, skb); |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1008 | } |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1009 | |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 1010 | dma_sync_single_for_device(&fep->pdev->dev, bdp->cbd_bufaddr, |
| 1011 | FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1012 | rx_processing_done: |
| 1013 | /* Clear the status flags for this buffer */ |
| 1014 | status &= ~BD_ENET_RX_STATS; |
| 1015 | |
| 1016 | /* Mark the buffer empty */ |
| 1017 | status |= BD_ENET_RX_EMPTY; |
| 1018 | bdp->cbd_sc = status; |
| 1019 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1020 | if (fep->bufdesc_ex) { |
| 1021 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
| 1022 | |
| 1023 | ebdp->cbd_esc = BD_ENET_RX_INT; |
| 1024 | ebdp->cbd_prot = 0; |
| 1025 | ebdp->cbd_bdu = 0; |
| 1026 | } |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1027 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1028 | /* Update BD pointer to next entry */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1029 | bdp = fec_enet_get_nextdesc(bdp, fep); |
| 1030 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1031 | /* Doing this here will keep the FEC running while we process |
| 1032 | * incoming frames. On a heavily loaded network, we should be |
| 1033 | * able to keep up at the expense of system resources. |
| 1034 | */ |
| 1035 | writel(0, fep->hwp + FEC_R_DES_ACTIVE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | } |
Sascha Hauer | 2e28532 | 2009-04-15 01:32:16 +0000 | [diff] [blame] | 1037 | fep->cur_rx = bdp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1039 | return pkt_received; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | } |
| 1041 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1042 | static irqreturn_t |
| 1043 | fec_enet_interrupt(int irq, void *dev_id) |
| 1044 | { |
| 1045 | struct net_device *ndev = dev_id; |
| 1046 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1047 | uint int_events; |
| 1048 | irqreturn_t ret = IRQ_NONE; |
| 1049 | |
| 1050 | do { |
| 1051 | int_events = readl(fep->hwp + FEC_IEVENT); |
| 1052 | writel(int_events, fep->hwp + FEC_IEVENT); |
| 1053 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1054 | if (int_events & (FEC_ENET_RXF | FEC_ENET_TXF)) { |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1055 | ret = IRQ_HANDLED; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1056 | |
| 1057 | /* Disable the RX interrupt */ |
| 1058 | if (napi_schedule_prep(&fep->napi)) { |
| 1059 | writel(FEC_RX_DISABLED_IMASK, |
| 1060 | fep->hwp + FEC_IMASK); |
| 1061 | __napi_schedule(&fep->napi); |
| 1062 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1063 | } |
| 1064 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1065 | if (int_events & FEC_ENET_MII) { |
| 1066 | ret = IRQ_HANDLED; |
| 1067 | complete(&fep->mdio_done); |
| 1068 | } |
| 1069 | } while (int_events); |
| 1070 | |
| 1071 | return ret; |
| 1072 | } |
| 1073 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1074 | static int fec_enet_rx_napi(struct napi_struct *napi, int budget) |
| 1075 | { |
| 1076 | struct net_device *ndev = napi->dev; |
| 1077 | int pkts = fec_enet_rx(ndev, budget); |
| 1078 | struct fec_enet_private *fep = netdev_priv(ndev); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1079 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1080 | fec_enet_tx(ndev); |
| 1081 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1082 | if (pkts < budget) { |
| 1083 | napi_complete(napi); |
| 1084 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
| 1085 | } |
| 1086 | return pkts; |
| 1087 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | /* ------------------------------------------------------------------------- */ |
Fabio Estevam | 0c7768a | 2013-01-07 17:42:56 +0000 | [diff] [blame] | 1090 | static void fec_get_mac(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1092 | struct fec_enet_private *fep = netdev_priv(ndev); |
Jingoo Han | 94660ba | 2013-08-30 13:56:26 +0900 | [diff] [blame] | 1093 | struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev); |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 1094 | unsigned char *iap, tmpaddr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1096 | /* |
| 1097 | * try to get mac address in following order: |
| 1098 | * |
| 1099 | * 1) module parameter via kernel command line in form |
| 1100 | * fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0 |
| 1101 | */ |
| 1102 | iap = macaddr; |
| 1103 | |
| 1104 | /* |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1105 | * 2) from device tree data |
| 1106 | */ |
| 1107 | if (!is_valid_ether_addr(iap)) { |
| 1108 | struct device_node *np = fep->pdev->dev.of_node; |
| 1109 | if (np) { |
| 1110 | const char *mac = of_get_mac_address(np); |
| 1111 | if (mac) |
| 1112 | iap = (unsigned char *) mac; |
| 1113 | } |
| 1114 | } |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1115 | |
| 1116 | /* |
| 1117 | * 3) from flash or fuse (via platform data) |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1118 | */ |
| 1119 | if (!is_valid_ether_addr(iap)) { |
| 1120 | #ifdef CONFIG_M5272 |
| 1121 | if (FEC_FLASHMAC) |
| 1122 | iap = (unsigned char *)FEC_FLASHMAC; |
| 1123 | #else |
| 1124 | if (pdata) |
Lothar Waßmann | 589efdc | 2011-12-07 21:59:29 +0000 | [diff] [blame] | 1125 | iap = (unsigned char *)&pdata->mac; |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1126 | #endif |
| 1127 | } |
| 1128 | |
| 1129 | /* |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1130 | * 4) FEC mac registers set by bootloader |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1131 | */ |
| 1132 | if (!is_valid_ether_addr(iap)) { |
Dan Carpenter | 7d7628f | 2013-08-29 11:25:14 +0300 | [diff] [blame] | 1133 | *((__be32 *) &tmpaddr[0]) = |
| 1134 | cpu_to_be32(readl(fep->hwp + FEC_ADDR_LOW)); |
| 1135 | *((__be16 *) &tmpaddr[4]) = |
| 1136 | cpu_to_be16(readl(fep->hwp + FEC_ADDR_HIGH) >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | iap = &tmpaddr[0]; |
| 1138 | } |
| 1139 | |
Lucas Stach | ff5b2fa | 2013-06-03 00:38:39 +0000 | [diff] [blame] | 1140 | /* |
| 1141 | * 5) random mac address |
| 1142 | */ |
| 1143 | if (!is_valid_ether_addr(iap)) { |
| 1144 | /* Report it and use a random ethernet address instead */ |
| 1145 | netdev_err(ndev, "Invalid MAC address: %pM\n", iap); |
| 1146 | eth_hw_addr_random(ndev); |
| 1147 | netdev_info(ndev, "Using random MAC address: %pM\n", |
| 1148 | ndev->dev_addr); |
| 1149 | return; |
| 1150 | } |
| 1151 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1152 | memcpy(ndev->dev_addr, iap, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1154 | /* Adjust MAC if using macaddr */ |
| 1155 | if (iap == macaddr) |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 1156 | ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | |
| 1159 | /* ------------------------------------------------------------------------- */ |
| 1160 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1161 | /* |
| 1162 | * Phy section |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1164 | static void fec_enet_adjust_link(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1166 | struct fec_enet_private *fep = netdev_priv(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1167 | struct phy_device *phy_dev = fep->phy_dev; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1168 | int status_change = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1170 | /* Prevent a state halted on mii error */ |
| 1171 | if (fep->mii_timeout && phy_dev->state == PHY_HALTED) { |
| 1172 | phy_dev->state = PHY_RESUMING; |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1173 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1175 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1176 | if (phy_dev->link) { |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1177 | if (!fep->link) { |
Lothar Waßmann | 6ea0722 | 2011-12-07 21:59:27 +0000 | [diff] [blame] | 1178 | fep->link = phy_dev->link; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1179 | status_change = 1; |
| 1180 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1181 | |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1182 | if (fep->full_duplex != phy_dev->duplex) |
| 1183 | status_change = 1; |
| 1184 | |
| 1185 | if (phy_dev->speed != fep->speed) { |
| 1186 | fep->speed = phy_dev->speed; |
| 1187 | status_change = 1; |
| 1188 | } |
| 1189 | |
| 1190 | /* if any of the above changed restart the FEC */ |
| 1191 | if (status_change) |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1192 | fec_restart(ndev, phy_dev->duplex); |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1193 | } else { |
| 1194 | if (fep->link) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1195 | fec_stop(ndev); |
Lucas Stach | 8d7ed0f | 2013-04-16 00:42:42 +0000 | [diff] [blame] | 1196 | fep->link = phy_dev->link; |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1197 | status_change = 1; |
| 1198 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1199 | } |
| 1200 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1201 | if (status_change) |
| 1202 | phy_print_status(phy_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1205 | static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | { |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1207 | struct fec_enet_private *fep = bus->priv; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1208 | unsigned long time_left; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1209 | |
| 1210 | fep->mii_timeout = 0; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1211 | init_completion(&fep->mdio_done); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1212 | |
| 1213 | /* start a read op */ |
| 1214 | writel(FEC_MMFR_ST | FEC_MMFR_OP_READ | |
| 1215 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | |
| 1216 | FEC_MMFR_TA, fep->hwp + FEC_MII_DATA); |
| 1217 | |
| 1218 | /* wait for end of transfer */ |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1219 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
| 1220 | usecs_to_jiffies(FEC_MII_TIMEOUT)); |
| 1221 | if (time_left == 0) { |
| 1222 | fep->mii_timeout = 1; |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1223 | netdev_err(fep->netdev, "MDIO read timeout\n"); |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1224 | return -ETIMEDOUT; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | /* return value */ |
| 1228 | return FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA)); |
| 1229 | } |
| 1230 | |
| 1231 | static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, |
| 1232 | u16 value) |
| 1233 | { |
| 1234 | struct fec_enet_private *fep = bus->priv; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1235 | unsigned long time_left; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1236 | |
| 1237 | fep->mii_timeout = 0; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1238 | init_completion(&fep->mdio_done); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1239 | |
Shawn Guo | 862f098 | 2011-01-05 21:13:09 +0000 | [diff] [blame] | 1240 | /* start a write op */ |
| 1241 | writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1242 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | |
| 1243 | FEC_MMFR_TA | FEC_MMFR_DATA(value), |
| 1244 | fep->hwp + FEC_MII_DATA); |
| 1245 | |
| 1246 | /* wait for end of transfer */ |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1247 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
| 1248 | usecs_to_jiffies(FEC_MII_TIMEOUT)); |
| 1249 | if (time_left == 0) { |
| 1250 | fep->mii_timeout = 1; |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1251 | netdev_err(fep->netdev, "MDIO write timeout\n"); |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1252 | return -ETIMEDOUT; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | return 0; |
| 1256 | } |
| 1257 | |
| 1258 | static int fec_enet_mdio_reset(struct mii_bus *bus) |
| 1259 | { |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1263 | static int fec_enet_mii_probe(struct net_device *ndev) |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1264 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1265 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1266 | const struct platform_device_id *id_entry = |
| 1267 | platform_get_device_id(fep->pdev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1268 | struct phy_device *phy_dev = NULL; |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1269 | char mdio_bus_id[MII_BUS_ID_SIZE]; |
| 1270 | char phy_name[MII_BUS_ID_SIZE + 3]; |
| 1271 | int phy_id; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 1272 | int dev_id = fep->dev_id; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1273 | |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1274 | fep->phy_dev = NULL; |
| 1275 | |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1276 | /* check for attached phy */ |
| 1277 | for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) { |
| 1278 | if ((fep->mii_bus->phy_mask & (1 << phy_id))) |
| 1279 | continue; |
| 1280 | if (fep->mii_bus->phy_map[phy_id] == NULL) |
| 1281 | continue; |
| 1282 | if (fep->mii_bus->phy_map[phy_id]->phy_id == 0) |
| 1283 | continue; |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1284 | if (dev_id--) |
| 1285 | continue; |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1286 | strncpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE); |
| 1287 | break; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1290 | if (phy_id >= PHY_MAX_ADDR) { |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1291 | netdev_info(ndev, "no PHY, assuming direct connection to switch\n"); |
Florian Fainelli | ea51ade9 | 2012-02-13 01:23:22 +0000 | [diff] [blame] | 1292 | strncpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE); |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1293 | phy_id = 0; |
| 1294 | } |
| 1295 | |
Richard Zhao | a7ed07d | 2012-01-29 22:08:12 +0000 | [diff] [blame] | 1296 | snprintf(phy_name, sizeof(phy_name), PHY_ID_FMT, mdio_bus_id, phy_id); |
Florian Fainelli | f9a8f83 | 2013-01-14 00:52:52 +0000 | [diff] [blame] | 1297 | phy_dev = phy_connect(ndev, phy_name, &fec_enet_adjust_link, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1298 | fep->phy_interface); |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1299 | if (IS_ERR(phy_dev)) { |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1300 | netdev_err(ndev, "could not attach to PHY\n"); |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1301 | return PTR_ERR(phy_dev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | /* mask with MAC supported features */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1305 | if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1306 | phy_dev->supported &= PHY_GBIT_FEATURES; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1307 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1308 | phy_dev->supported |= SUPPORTED_Pause; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1309 | #endif |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1310 | } |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1311 | else |
| 1312 | phy_dev->supported &= PHY_BASIC_FEATURES; |
| 1313 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1314 | phy_dev->advertising = phy_dev->supported; |
| 1315 | |
| 1316 | fep->phy_dev = phy_dev; |
| 1317 | fep->link = 0; |
| 1318 | fep->full_duplex = 0; |
| 1319 | |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1320 | netdev_info(ndev, "Freescale FEC PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", |
| 1321 | fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev), |
| 1322 | fep->phy_dev->irq); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1323 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1324 | return 0; |
| 1325 | } |
| 1326 | |
| 1327 | static int fec_enet_mii_init(struct platform_device *pdev) |
| 1328 | { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1329 | static struct mii_bus *fec0_mii_bus; |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1330 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 1331 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1332 | const struct platform_device_id *id_entry = |
| 1333 | platform_get_device_id(fep->pdev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1334 | int err = -ENXIO, i; |
| 1335 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1336 | /* |
| 1337 | * The dual fec interfaces are not equivalent with enet-mac. |
| 1338 | * Here are the differences: |
| 1339 | * |
| 1340 | * - fec0 supports MII & RMII modes while fec1 only supports RMII |
| 1341 | * - fec0 acts as the 1588 time master while fec1 is slave |
| 1342 | * - external phys can only be configured by fec0 |
| 1343 | * |
| 1344 | * That is to say fec1 can not work independently. It only works |
| 1345 | * when fec0 is working. The reason behind this design is that the |
| 1346 | * second interface is added primarily for Switch mode. |
| 1347 | * |
| 1348 | * Because of the last point above, both phys are attached on fec0 |
| 1349 | * mdio interface in board design, and need to be configured by |
| 1350 | * fec0 mii_bus. |
| 1351 | */ |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 1352 | if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && fep->dev_id > 0) { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1353 | /* fec1 uses fec0 mii_bus */ |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 1354 | if (mii_cnt && fec0_mii_bus) { |
| 1355 | fep->mii_bus = fec0_mii_bus; |
| 1356 | mii_cnt++; |
| 1357 | return 0; |
| 1358 | } |
| 1359 | return -ENOENT; |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1362 | fep->mii_timeout = 0; |
| 1363 | |
| 1364 | /* |
| 1365 | * Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed) |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1366 | * |
| 1367 | * The formula for FEC MDC is 'ref_freq / (MII_SPEED x 2)' while |
| 1368 | * for ENET-MAC is 'ref_freq / ((MII_SPEED + 1) x 2)'. The i.MX28 |
| 1369 | * Reference Manual has an error on this, and gets fixed on i.MX6Q |
| 1370 | * document. |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1371 | */ |
Sascha Hauer | f4d40de | 2012-03-07 09:30:49 +0100 | [diff] [blame] | 1372 | fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ahb), 5000000); |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1373 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) |
| 1374 | fep->phy_speed--; |
| 1375 | fep->phy_speed <<= 1; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1376 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 1377 | |
| 1378 | fep->mii_bus = mdiobus_alloc(); |
| 1379 | if (fep->mii_bus == NULL) { |
| 1380 | err = -ENOMEM; |
| 1381 | goto err_out; |
| 1382 | } |
| 1383 | |
| 1384 | fep->mii_bus->name = "fec_enet_mii_bus"; |
| 1385 | fep->mii_bus->read = fec_enet_mdio_read; |
| 1386 | fep->mii_bus->write = fec_enet_mdio_write; |
| 1387 | fep->mii_bus->reset = fec_enet_mdio_reset; |
Florian Fainelli | 391420f | 2012-01-09 23:59:13 +0000 | [diff] [blame] | 1388 | snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", |
| 1389 | pdev->name, fep->dev_id + 1); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1390 | fep->mii_bus->priv = fep; |
| 1391 | fep->mii_bus->parent = &pdev->dev; |
| 1392 | |
| 1393 | fep->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); |
| 1394 | if (!fep->mii_bus->irq) { |
| 1395 | err = -ENOMEM; |
| 1396 | goto err_out_free_mdiobus; |
| 1397 | } |
| 1398 | |
| 1399 | for (i = 0; i < PHY_MAX_ADDR; i++) |
| 1400 | fep->mii_bus->irq[i] = PHY_POLL; |
| 1401 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1402 | if (mdiobus_register(fep->mii_bus)) |
| 1403 | goto err_out_free_mdio_irq; |
| 1404 | |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 1405 | mii_cnt++; |
| 1406 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1407 | /* save fec0 mii_bus */ |
| 1408 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) |
| 1409 | fec0_mii_bus = fep->mii_bus; |
| 1410 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1411 | return 0; |
| 1412 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1413 | err_out_free_mdio_irq: |
| 1414 | kfree(fep->mii_bus->irq); |
| 1415 | err_out_free_mdiobus: |
| 1416 | mdiobus_free(fep->mii_bus); |
| 1417 | err_out: |
| 1418 | return err; |
| 1419 | } |
| 1420 | |
| 1421 | static void fec_enet_mii_remove(struct fec_enet_private *fep) |
| 1422 | { |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 1423 | if (--mii_cnt == 0) { |
| 1424 | mdiobus_unregister(fep->mii_bus); |
| 1425 | kfree(fep->mii_bus->irq); |
| 1426 | mdiobus_free(fep->mii_bus); |
| 1427 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1428 | } |
| 1429 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1430 | static int fec_enet_get_settings(struct net_device *ndev, |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1431 | struct ethtool_cmd *cmd) |
| 1432 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1433 | struct fec_enet_private *fep = netdev_priv(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1434 | struct phy_device *phydev = fep->phy_dev; |
| 1435 | |
| 1436 | if (!phydev) |
| 1437 | return -ENODEV; |
| 1438 | |
| 1439 | return phy_ethtool_gset(phydev, cmd); |
| 1440 | } |
| 1441 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1442 | static int fec_enet_set_settings(struct net_device *ndev, |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1443 | struct ethtool_cmd *cmd) |
| 1444 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1445 | struct fec_enet_private *fep = netdev_priv(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1446 | struct phy_device *phydev = fep->phy_dev; |
| 1447 | |
| 1448 | if (!phydev) |
| 1449 | return -ENODEV; |
| 1450 | |
| 1451 | return phy_ethtool_sset(phydev, cmd); |
| 1452 | } |
| 1453 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1454 | static void fec_enet_get_drvinfo(struct net_device *ndev, |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1455 | struct ethtool_drvinfo *info) |
| 1456 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1457 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 1459 | strlcpy(info->driver, fep->pdev->dev.driver->name, |
| 1460 | sizeof(info->driver)); |
| 1461 | strlcpy(info->version, "Revision: 1.0", sizeof(info->version)); |
| 1462 | strlcpy(info->bus_info, dev_name(&ndev->dev), sizeof(info->bus_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1464 | |
Frank Li | 5ebae489 | 2013-01-06 16:25:07 +0000 | [diff] [blame] | 1465 | static int fec_enet_get_ts_info(struct net_device *ndev, |
| 1466 | struct ethtool_ts_info *info) |
| 1467 | { |
| 1468 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1469 | |
| 1470 | if (fep->bufdesc_ex) { |
| 1471 | |
| 1472 | info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | |
| 1473 | SOF_TIMESTAMPING_RX_SOFTWARE | |
| 1474 | SOF_TIMESTAMPING_SOFTWARE | |
| 1475 | SOF_TIMESTAMPING_TX_HARDWARE | |
| 1476 | SOF_TIMESTAMPING_RX_HARDWARE | |
| 1477 | SOF_TIMESTAMPING_RAW_HARDWARE; |
| 1478 | if (fep->ptp_clock) |
| 1479 | info->phc_index = ptp_clock_index(fep->ptp_clock); |
| 1480 | else |
| 1481 | info->phc_index = -1; |
| 1482 | |
| 1483 | info->tx_types = (1 << HWTSTAMP_TX_OFF) | |
| 1484 | (1 << HWTSTAMP_TX_ON); |
| 1485 | |
| 1486 | info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | |
| 1487 | (1 << HWTSTAMP_FILTER_ALL); |
| 1488 | return 0; |
| 1489 | } else { |
| 1490 | return ethtool_op_get_ts_info(ndev, info); |
| 1491 | } |
| 1492 | } |
| 1493 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1494 | #if !defined(CONFIG_M5272) |
| 1495 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1496 | static void fec_enet_get_pauseparam(struct net_device *ndev, |
| 1497 | struct ethtool_pauseparam *pause) |
| 1498 | { |
| 1499 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1500 | |
| 1501 | pause->autoneg = (fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) != 0; |
| 1502 | pause->tx_pause = (fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) != 0; |
| 1503 | pause->rx_pause = pause->tx_pause; |
| 1504 | } |
| 1505 | |
| 1506 | static int fec_enet_set_pauseparam(struct net_device *ndev, |
| 1507 | struct ethtool_pauseparam *pause) |
| 1508 | { |
| 1509 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1510 | |
| 1511 | if (pause->tx_pause != pause->rx_pause) { |
| 1512 | netdev_info(ndev, |
| 1513 | "hardware only support enable/disable both tx and rx"); |
| 1514 | return -EINVAL; |
| 1515 | } |
| 1516 | |
| 1517 | fep->pause_flag = 0; |
| 1518 | |
| 1519 | /* tx pause must be same as rx pause */ |
| 1520 | fep->pause_flag |= pause->rx_pause ? FEC_PAUSE_FLAG_ENABLE : 0; |
| 1521 | fep->pause_flag |= pause->autoneg ? FEC_PAUSE_FLAG_AUTONEG : 0; |
| 1522 | |
| 1523 | if (pause->rx_pause || pause->autoneg) { |
| 1524 | fep->phy_dev->supported |= ADVERTISED_Pause; |
| 1525 | fep->phy_dev->advertising |= ADVERTISED_Pause; |
| 1526 | } else { |
| 1527 | fep->phy_dev->supported &= ~ADVERTISED_Pause; |
| 1528 | fep->phy_dev->advertising &= ~ADVERTISED_Pause; |
| 1529 | } |
| 1530 | |
| 1531 | if (pause->autoneg) { |
| 1532 | if (netif_running(ndev)) |
| 1533 | fec_stop(ndev); |
| 1534 | phy_start_aneg(fep->phy_dev); |
| 1535 | } |
| 1536 | if (netif_running(ndev)) |
| 1537 | fec_restart(ndev, 0); |
| 1538 | |
| 1539 | return 0; |
| 1540 | } |
| 1541 | |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 1542 | static const struct fec_stat { |
| 1543 | char name[ETH_GSTRING_LEN]; |
| 1544 | u16 offset; |
| 1545 | } fec_stats[] = { |
| 1546 | /* RMON TX */ |
| 1547 | { "tx_dropped", RMON_T_DROP }, |
| 1548 | { "tx_packets", RMON_T_PACKETS }, |
| 1549 | { "tx_broadcast", RMON_T_BC_PKT }, |
| 1550 | { "tx_multicast", RMON_T_MC_PKT }, |
| 1551 | { "tx_crc_errors", RMON_T_CRC_ALIGN }, |
| 1552 | { "tx_undersize", RMON_T_UNDERSIZE }, |
| 1553 | { "tx_oversize", RMON_T_OVERSIZE }, |
| 1554 | { "tx_fragment", RMON_T_FRAG }, |
| 1555 | { "tx_jabber", RMON_T_JAB }, |
| 1556 | { "tx_collision", RMON_T_COL }, |
| 1557 | { "tx_64byte", RMON_T_P64 }, |
| 1558 | { "tx_65to127byte", RMON_T_P65TO127 }, |
| 1559 | { "tx_128to255byte", RMON_T_P128TO255 }, |
| 1560 | { "tx_256to511byte", RMON_T_P256TO511 }, |
| 1561 | { "tx_512to1023byte", RMON_T_P512TO1023 }, |
| 1562 | { "tx_1024to2047byte", RMON_T_P1024TO2047 }, |
| 1563 | { "tx_GTE2048byte", RMON_T_P_GTE2048 }, |
| 1564 | { "tx_octets", RMON_T_OCTETS }, |
| 1565 | |
| 1566 | /* IEEE TX */ |
| 1567 | { "IEEE_tx_drop", IEEE_T_DROP }, |
| 1568 | { "IEEE_tx_frame_ok", IEEE_T_FRAME_OK }, |
| 1569 | { "IEEE_tx_1col", IEEE_T_1COL }, |
| 1570 | { "IEEE_tx_mcol", IEEE_T_MCOL }, |
| 1571 | { "IEEE_tx_def", IEEE_T_DEF }, |
| 1572 | { "IEEE_tx_lcol", IEEE_T_LCOL }, |
| 1573 | { "IEEE_tx_excol", IEEE_T_EXCOL }, |
| 1574 | { "IEEE_tx_macerr", IEEE_T_MACERR }, |
| 1575 | { "IEEE_tx_cserr", IEEE_T_CSERR }, |
| 1576 | { "IEEE_tx_sqe", IEEE_T_SQE }, |
| 1577 | { "IEEE_tx_fdxfc", IEEE_T_FDXFC }, |
| 1578 | { "IEEE_tx_octets_ok", IEEE_T_OCTETS_OK }, |
| 1579 | |
| 1580 | /* RMON RX */ |
| 1581 | { "rx_packets", RMON_R_PACKETS }, |
| 1582 | { "rx_broadcast", RMON_R_BC_PKT }, |
| 1583 | { "rx_multicast", RMON_R_MC_PKT }, |
| 1584 | { "rx_crc_errors", RMON_R_CRC_ALIGN }, |
| 1585 | { "rx_undersize", RMON_R_UNDERSIZE }, |
| 1586 | { "rx_oversize", RMON_R_OVERSIZE }, |
| 1587 | { "rx_fragment", RMON_R_FRAG }, |
| 1588 | { "rx_jabber", RMON_R_JAB }, |
| 1589 | { "rx_64byte", RMON_R_P64 }, |
| 1590 | { "rx_65to127byte", RMON_R_P65TO127 }, |
| 1591 | { "rx_128to255byte", RMON_R_P128TO255 }, |
| 1592 | { "rx_256to511byte", RMON_R_P256TO511 }, |
| 1593 | { "rx_512to1023byte", RMON_R_P512TO1023 }, |
| 1594 | { "rx_1024to2047byte", RMON_R_P1024TO2047 }, |
| 1595 | { "rx_GTE2048byte", RMON_R_P_GTE2048 }, |
| 1596 | { "rx_octets", RMON_R_OCTETS }, |
| 1597 | |
| 1598 | /* IEEE RX */ |
| 1599 | { "IEEE_rx_drop", IEEE_R_DROP }, |
| 1600 | { "IEEE_rx_frame_ok", IEEE_R_FRAME_OK }, |
| 1601 | { "IEEE_rx_crc", IEEE_R_CRC }, |
| 1602 | { "IEEE_rx_align", IEEE_R_ALIGN }, |
| 1603 | { "IEEE_rx_macerr", IEEE_R_MACERR }, |
| 1604 | { "IEEE_rx_fdxfc", IEEE_R_FDXFC }, |
| 1605 | { "IEEE_rx_octets_ok", IEEE_R_OCTETS_OK }, |
| 1606 | }; |
| 1607 | |
| 1608 | static void fec_enet_get_ethtool_stats(struct net_device *dev, |
| 1609 | struct ethtool_stats *stats, u64 *data) |
| 1610 | { |
| 1611 | struct fec_enet_private *fep = netdev_priv(dev); |
| 1612 | int i; |
| 1613 | |
| 1614 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) |
| 1615 | data[i] = readl(fep->hwp + fec_stats[i].offset); |
| 1616 | } |
| 1617 | |
| 1618 | static void fec_enet_get_strings(struct net_device *netdev, |
| 1619 | u32 stringset, u8 *data) |
| 1620 | { |
| 1621 | int i; |
| 1622 | switch (stringset) { |
| 1623 | case ETH_SS_STATS: |
| 1624 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) |
| 1625 | memcpy(data + i * ETH_GSTRING_LEN, |
| 1626 | fec_stats[i].name, ETH_GSTRING_LEN); |
| 1627 | break; |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | static int fec_enet_get_sset_count(struct net_device *dev, int sset) |
| 1632 | { |
| 1633 | switch (sset) { |
| 1634 | case ETH_SS_STATS: |
| 1635 | return ARRAY_SIZE(fec_stats); |
| 1636 | default: |
| 1637 | return -EOPNOTSUPP; |
| 1638 | } |
| 1639 | } |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1640 | #endif /* !defined(CONFIG_M5272) */ |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 1641 | |
Chris Healy | 32bc9b4 | 2013-06-17 07:25:06 -0700 | [diff] [blame] | 1642 | static int fec_enet_nway_reset(struct net_device *dev) |
| 1643 | { |
| 1644 | struct fec_enet_private *fep = netdev_priv(dev); |
| 1645 | struct phy_device *phydev = fep->phy_dev; |
| 1646 | |
| 1647 | if (!phydev) |
| 1648 | return -ENODEV; |
| 1649 | |
| 1650 | return genphy_restart_aneg(phydev); |
| 1651 | } |
| 1652 | |
stephen hemminger | 9b07be4 | 2012-01-04 12:59:49 +0000 | [diff] [blame] | 1653 | static const struct ethtool_ops fec_enet_ethtool_ops = { |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1654 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1655 | .get_pauseparam = fec_enet_get_pauseparam, |
| 1656 | .set_pauseparam = fec_enet_set_pauseparam, |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1657 | #endif |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1658 | .get_settings = fec_enet_get_settings, |
| 1659 | .set_settings = fec_enet_set_settings, |
| 1660 | .get_drvinfo = fec_enet_get_drvinfo, |
| 1661 | .get_link = ethtool_op_get_link, |
Frank Li | 5ebae489 | 2013-01-06 16:25:07 +0000 | [diff] [blame] | 1662 | .get_ts_info = fec_enet_get_ts_info, |
Chris Healy | 32bc9b4 | 2013-06-17 07:25:06 -0700 | [diff] [blame] | 1663 | .nway_reset = fec_enet_nway_reset, |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 1664 | #ifndef CONFIG_M5272 |
| 1665 | .get_ethtool_stats = fec_enet_get_ethtool_stats, |
| 1666 | .get_strings = fec_enet_get_strings, |
| 1667 | .get_sset_count = fec_enet_get_sset_count, |
| 1668 | #endif |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1669 | }; |
| 1670 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1671 | static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1672 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1673 | struct fec_enet_private *fep = netdev_priv(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1674 | struct phy_device *phydev = fep->phy_dev; |
| 1675 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1676 | if (!netif_running(ndev)) |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1677 | return -EINVAL; |
| 1678 | |
| 1679 | if (!phydev) |
| 1680 | return -ENODEV; |
| 1681 | |
Ben Hutchings | 1d5244d | 2013-11-18 23:02:44 +0000 | [diff] [blame] | 1682 | if (fep->bufdesc_ex) { |
| 1683 | if (cmd == SIOCSHWTSTAMP) |
| 1684 | return fec_ptp_set(ndev, rq); |
| 1685 | if (cmd == SIOCGHWTSTAMP) |
| 1686 | return fec_ptp_get(ndev, rq); |
| 1687 | } |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1688 | |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 1689 | return phy_mii_ioctl(phydev, rq, cmd); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1690 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1692 | static void fec_enet_free_buffers(struct net_device *ndev) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1693 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1694 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabio Estevam | da2191e | 2013-03-20 12:31:07 -0300 | [diff] [blame] | 1695 | unsigned int i; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1696 | struct sk_buff *skb; |
| 1697 | struct bufdesc *bdp; |
| 1698 | |
| 1699 | bdp = fep->rx_bd_base; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1700 | for (i = 0; i < fep->rx_ring_size; i++) { |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1701 | skb = fep->rx_skbuff[i]; |
| 1702 | |
| 1703 | if (bdp->cbd_bufaddr) |
Uwe Kleine-König | d1ab1f5 | 2011-01-20 09:26:38 +0100 | [diff] [blame] | 1704 | dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1705 | FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); |
| 1706 | if (skb) |
| 1707 | dev_kfree_skb(skb); |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1708 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1709 | } |
| 1710 | |
| 1711 | bdp = fep->tx_bd_base; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1712 | for (i = 0; i < fep->tx_ring_size; i++) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1713 | kfree(fep->tx_bounce[i]); |
| 1714 | } |
| 1715 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1716 | static int fec_enet_alloc_buffers(struct net_device *ndev) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1717 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1718 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabio Estevam | da2191e | 2013-03-20 12:31:07 -0300 | [diff] [blame] | 1719 | unsigned int i; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1720 | struct sk_buff *skb; |
| 1721 | struct bufdesc *bdp; |
| 1722 | |
| 1723 | bdp = fep->rx_bd_base; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1724 | for (i = 0; i < fep->rx_ring_size; i++) { |
Fabio Estevam | b72061a | 2012-02-07 08:27:31 +0000 | [diff] [blame] | 1725 | skb = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1726 | if (!skb) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1727 | fec_enet_free_buffers(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1728 | return -ENOMEM; |
| 1729 | } |
| 1730 | fep->rx_skbuff[i] = skb; |
| 1731 | |
Uwe Kleine-König | d1ab1f5 | 2011-01-20 09:26:38 +0100 | [diff] [blame] | 1732 | bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data, |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1733 | FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 1734 | if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) { |
| 1735 | fec_enet_free_buffers(ndev); |
| 1736 | if (net_ratelimit()) |
| 1737 | netdev_err(ndev, "Rx DMA memory map failed\n"); |
| 1738 | return -ENOMEM; |
| 1739 | } |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1740 | bdp->cbd_sc = BD_ENET_RX_EMPTY; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1741 | |
| 1742 | if (fep->bufdesc_ex) { |
| 1743 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
| 1744 | ebdp->cbd_esc = BD_ENET_RX_INT; |
| 1745 | } |
| 1746 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1747 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1748 | } |
| 1749 | |
| 1750 | /* Set the last buffer to wrap. */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1751 | bdp = fec_enet_get_prevdesc(bdp, fep); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1752 | bdp->cbd_sc |= BD_SC_WRAP; |
| 1753 | |
| 1754 | bdp = fep->tx_bd_base; |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1755 | for (i = 0; i < fep->tx_ring_size; i++) { |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1756 | fep->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL); |
| 1757 | |
| 1758 | bdp->cbd_sc = 0; |
| 1759 | bdp->cbd_bufaddr = 0; |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1760 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1761 | if (fep->bufdesc_ex) { |
| 1762 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
Jim Baxter | 96d2222 | 2013-03-26 05:25:07 +0000 | [diff] [blame] | 1763 | ebdp->cbd_esc = BD_ENET_TX_INT; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1764 | } |
| 1765 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1766 | bdp = fec_enet_get_nextdesc(bdp, fep); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1767 | } |
| 1768 | |
| 1769 | /* Set the last buffer to wrap. */ |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1770 | bdp = fec_enet_get_prevdesc(bdp, fep); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1771 | bdp->cbd_sc |= BD_SC_WRAP; |
| 1772 | |
| 1773 | return 0; |
| 1774 | } |
| 1775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1777 | fec_enet_open(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1779 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1780 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | |
| 1782 | /* I should reset the ring buffers here, but I don't yet know |
| 1783 | * a simple way to do that. |
| 1784 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1786 | ret = fec_enet_alloc_buffers(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1787 | if (ret) |
| 1788 | return ret; |
| 1789 | |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1790 | /* Probe and connect to PHY when open the interface */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1791 | ret = fec_enet_mii_probe(ndev); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1792 | if (ret) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1793 | fec_enet_free_buffers(ndev); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1794 | return ret; |
| 1795 | } |
Russell King | ce5eaf0 | 2014-02-18 12:55:42 +0000 | [diff] [blame] | 1796 | |
| 1797 | napi_enable(&fep->napi); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1798 | phy_start(fep->phy_dev); |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1799 | netif_start_queue(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | fep->opened = 1; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1801 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1805 | fec_enet_close(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1807 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1809 | /* Don't know what to do yet. */ |
Georg Hofmann | 3f104c3 | 2013-03-14 06:54:09 +0000 | [diff] [blame] | 1810 | napi_disable(&fep->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | fep->opened = 0; |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1812 | netif_stop_queue(ndev); |
| 1813 | fec_stop(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | |
Uwe Kleine-König | e497ba8 | 2011-01-17 20:04:23 +0100 | [diff] [blame] | 1815 | if (fep->phy_dev) { |
| 1816 | phy_stop(fep->phy_dev); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1817 | phy_disconnect(fep->phy_dev); |
Uwe Kleine-König | e497ba8 | 2011-01-17 20:04:23 +0100 | [diff] [blame] | 1818 | } |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1819 | |
Uwe Kleine-König | db8880b | 2011-01-19 20:26:39 +0100 | [diff] [blame] | 1820 | fec_enet_free_buffers(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | return 0; |
| 1823 | } |
| 1824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | /* Set or clear the multicast filter for this adaptor. |
| 1826 | * Skeleton taken from sunlance driver. |
| 1827 | * The CPM Ethernet implementation allows Multicast as well as individual |
| 1828 | * MAC address filtering. Some of the drivers check to make sure it is |
| 1829 | * a group multicast address, and discard those that are not. I guess I |
| 1830 | * will do the same for now, but just remove the test if you want |
| 1831 | * individual filtering as well (do the upper net layers want or support |
| 1832 | * this kind of feature?). |
| 1833 | */ |
| 1834 | |
| 1835 | #define HASH_BITS 6 /* #bits in hash */ |
| 1836 | #define CRC32_POLY 0xEDB88320 |
| 1837 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1838 | static void set_multicast_list(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1840 | struct fec_enet_private *fep = netdev_priv(ndev); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1841 | struct netdev_hw_addr *ha; |
Jiri Pirko | 48e2f18 | 2010-02-22 09:22:26 +0000 | [diff] [blame] | 1842 | unsigned int i, bit, data, crc, tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | unsigned char hash; |
| 1844 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1845 | if (ndev->flags & IFF_PROMISC) { |
Sascha Hauer | f44d630 | 2009-04-15 03:11:30 +0000 | [diff] [blame] | 1846 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
| 1847 | tmp |= 0x8; |
| 1848 | writel(tmp, fep->hwp + FEC_R_CNTRL); |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1849 | return; |
| 1850 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1852 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
| 1853 | tmp &= ~0x8; |
| 1854 | writel(tmp, fep->hwp + FEC_R_CNTRL); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1855 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1856 | if (ndev->flags & IFF_ALLMULTI) { |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1857 | /* Catch all multicast addresses, so set the |
| 1858 | * filter to all 1's |
| 1859 | */ |
| 1860 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 1861 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1863 | return; |
| 1864 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1865 | |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1866 | /* Clear filter and add the addresses in hash register |
| 1867 | */ |
| 1868 | writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 1869 | writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1871 | netdev_for_each_mc_addr(ha, ndev) { |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1872 | /* calculate crc32 value of mac address */ |
| 1873 | crc = 0xffffffff; |
| 1874 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1875 | for (i = 0; i < ndev->addr_len; i++) { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1876 | data = ha->addr[i]; |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1877 | for (bit = 0; bit < 8; bit++, data >>= 1) { |
| 1878 | crc = (crc >> 1) ^ |
| 1879 | (((crc ^ data) & 1) ? CRC32_POLY : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | } |
| 1881 | } |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 1882 | |
| 1883 | /* only upper 6 bits (HASH_BITS) are used |
| 1884 | * which point to specific bit in he hash registers |
| 1885 | */ |
| 1886 | hash = (crc >> (32 - HASH_BITS)) & 0x3f; |
| 1887 | |
| 1888 | if (hash > 31) { |
| 1889 | tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 1890 | tmp |= 1 << (hash - 32); |
| 1891 | writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 1892 | } else { |
| 1893 | tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
| 1894 | tmp |= 1 << hash; |
| 1895 | writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
| 1896 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | } |
| 1898 | } |
| 1899 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1900 | /* Set a MAC change in hardware. */ |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1901 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1902 | fec_set_mac_address(struct net_device *ndev, void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1904 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1905 | struct sockaddr *addr = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1907 | if (!is_valid_ether_addr(addr->sa_data)) |
| 1908 | return -EADDRNOTAVAIL; |
| 1909 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1910 | memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len); |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1911 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1912 | writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) | |
| 1913 | (ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24), |
Sascha Hauer | f44d630 | 2009-04-15 03:11:30 +0000 | [diff] [blame] | 1914 | fep->hwp + FEC_ADDR_LOW); |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1915 | writel((ndev->dev_addr[5] << 16) | (ndev->dev_addr[4] << 24), |
Mattias Walström | 7cff094 | 2010-05-05 00:55:48 -0700 | [diff] [blame] | 1916 | fep->hwp + FEC_ADDR_HIGH); |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1917 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | } |
| 1919 | |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 1920 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Ben Hutchings | 49ce9c2 | 2012-07-10 10:56:00 +0000 | [diff] [blame] | 1921 | /** |
| 1922 | * fec_poll_controller - FEC Poll controller function |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 1923 | * @dev: The FEC network adapter |
| 1924 | * |
| 1925 | * Polled functionality used by netconsole and others in non interrupt mode |
| 1926 | * |
| 1927 | */ |
Wei Yongjun | 47a5247 | 2013-03-20 05:06:11 +0000 | [diff] [blame] | 1928 | static void fec_poll_controller(struct net_device *dev) |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 1929 | { |
| 1930 | int i; |
| 1931 | struct fec_enet_private *fep = netdev_priv(dev); |
| 1932 | |
| 1933 | for (i = 0; i < FEC_IRQ_NUM; i++) { |
| 1934 | if (fep->irq[i] > 0) { |
| 1935 | disable_irq(fep->irq[i]); |
| 1936 | fec_enet_interrupt(fep->irq[i], dev); |
| 1937 | enable_irq(fep->irq[i]); |
| 1938 | } |
| 1939 | } |
| 1940 | } |
| 1941 | #endif |
| 1942 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 1943 | static int fec_set_features(struct net_device *netdev, |
| 1944 | netdev_features_t features) |
| 1945 | { |
| 1946 | struct fec_enet_private *fep = netdev_priv(netdev); |
| 1947 | netdev_features_t changed = features ^ netdev->features; |
| 1948 | |
| 1949 | netdev->features = features; |
| 1950 | |
| 1951 | /* Receive checksum has been changed */ |
| 1952 | if (changed & NETIF_F_RXCSUM) { |
| 1953 | if (features & NETIF_F_RXCSUM) |
| 1954 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; |
| 1955 | else |
| 1956 | fep->csum_flags &= ~FLAG_RX_CSUM_ENABLED; |
| 1957 | |
| 1958 | if (netif_running(netdev)) { |
| 1959 | fec_stop(netdev); |
| 1960 | fec_restart(netdev, fep->phy_dev->duplex); |
| 1961 | netif_wake_queue(netdev); |
| 1962 | } else { |
| 1963 | fec_restart(netdev, fep->phy_dev->duplex); |
| 1964 | } |
| 1965 | } |
| 1966 | |
| 1967 | return 0; |
| 1968 | } |
| 1969 | |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1970 | static const struct net_device_ops fec_netdev_ops = { |
| 1971 | .ndo_open = fec_enet_open, |
| 1972 | .ndo_stop = fec_enet_close, |
| 1973 | .ndo_start_xmit = fec_enet_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1974 | .ndo_set_rx_mode = set_multicast_list, |
Ben Hutchings | 635ecaa | 2009-07-09 17:59:01 +0000 | [diff] [blame] | 1975 | .ndo_change_mtu = eth_change_mtu, |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1976 | .ndo_validate_addr = eth_validate_addr, |
| 1977 | .ndo_tx_timeout = fec_timeout, |
| 1978 | .ndo_set_mac_address = fec_set_mac_address, |
Uwe Kleine-König | db8880b | 2011-01-19 20:26:39 +0100 | [diff] [blame] | 1979 | .ndo_do_ioctl = fec_enet_ioctl, |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 1980 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1981 | .ndo_poll_controller = fec_poll_controller, |
| 1982 | #endif |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 1983 | .ndo_set_features = fec_set_features, |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 1984 | }; |
| 1985 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1986 | /* |
| 1987 | * XXX: We need to clean up on failure exits here. |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 1988 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1990 | static int fec_enet_init(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1992 | struct fec_enet_private *fep = netdev_priv(ndev); |
Shawn Guo | 4849625 | 2013-05-08 21:08:22 +0000 | [diff] [blame] | 1993 | const struct platform_device_id *id_entry = |
| 1994 | platform_get_device_id(fep->pdev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1995 | struct bufdesc *cbd_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | |
Sascha Hauer | 8d4dd5c | 2009-04-15 01:32:17 +0000 | [diff] [blame] | 1997 | /* Allocate memory for buffer descriptors. */ |
| 1998 | cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma, |
Joe Perches | d0320f7 | 2013-03-14 13:07:21 +0000 | [diff] [blame] | 1999 | GFP_KERNEL); |
| 2000 | if (!cbd_base) |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 2001 | return -ENOMEM; |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 2002 | |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 2003 | memset(cbd_base, 0, PAGE_SIZE); |
Sebastian Siewior | 3b2b74c | 2008-05-01 14:08:12 +1000 | [diff] [blame] | 2004 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2005 | fep->netdev = ndev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 2007 | /* Get the Ethernet address */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2008 | fec_get_mac(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 2010 | /* init the tx & rx ring size */ |
| 2011 | fep->tx_ring_size = TX_RING_SIZE; |
| 2012 | fep->rx_ring_size = RX_RING_SIZE; |
| 2013 | |
Sascha Hauer | 8d4dd5c | 2009-04-15 01:32:17 +0000 | [diff] [blame] | 2014 | /* Set receive and transmit descriptor base. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2015 | fep->rx_bd_base = cbd_base; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2016 | if (fep->bufdesc_ex) |
| 2017 | fep->tx_bd_base = (struct bufdesc *) |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 2018 | (((struct bufdesc_ex *)cbd_base) + fep->rx_ring_size); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2019 | else |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 2020 | fep->tx_bd_base = cbd_base + fep->rx_ring_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 2022 | /* The FEC Ethernet specific entries in the device structure */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2023 | ndev->watchdog_timeo = TX_TIMEOUT; |
| 2024 | ndev->netdev_ops = &fec_netdev_ops; |
| 2025 | ndev->ethtool_ops = &fec_enet_ethtool_ops; |
Rob Herring | 633e753 | 2010-02-05 08:56:20 +0000 | [diff] [blame] | 2026 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 2027 | writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK); |
Fabio Estevam | 322555f | 2013-08-27 17:35:08 -0300 | [diff] [blame] | 2028 | netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, NAPI_POLL_WEIGHT); |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 2029 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 2030 | if (id_entry->driver_data & FEC_QUIRK_HAS_VLAN) { |
| 2031 | /* enable hw VLAN support */ |
| 2032 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; |
| 2033 | ndev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; |
| 2034 | } |
| 2035 | |
Shawn Guo | 4849625 | 2013-05-08 21:08:22 +0000 | [diff] [blame] | 2036 | if (id_entry->driver_data & FEC_QUIRK_HAS_CSUM) { |
| 2037 | /* enable hw accelerator */ |
| 2038 | ndev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
| 2039 | | NETIF_F_RXCSUM); |
| 2040 | ndev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
| 2041 | | NETIF_F_RXCSUM); |
| 2042 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; |
| 2043 | } |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 2044 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2045 | fec_restart(ndev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | return 0; |
| 2048 | } |
| 2049 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2050 | #ifdef CONFIG_OF |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 2051 | static void fec_reset_phy(struct platform_device *pdev) |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2052 | { |
| 2053 | int err, phy_reset; |
Shawn Guo | a3caad0 | 2012-06-27 03:45:24 +0000 | [diff] [blame] | 2054 | int msec = 1; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2055 | struct device_node *np = pdev->dev.of_node; |
| 2056 | |
| 2057 | if (!np) |
Shawn Guo | a9b2c8e | 2011-09-23 02:12:46 +0000 | [diff] [blame] | 2058 | return; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2059 | |
Shawn Guo | a3caad0 | 2012-06-27 03:45:24 +0000 | [diff] [blame] | 2060 | of_property_read_u32(np, "phy-reset-duration", &msec); |
| 2061 | /* A sane reset duration should not be longer than 1s */ |
| 2062 | if (msec > 1000) |
| 2063 | msec = 1; |
| 2064 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2065 | phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); |
Fabio Estevam | 07dcf8e | 2013-02-18 10:20:31 +0000 | [diff] [blame] | 2066 | if (!gpio_is_valid(phy_reset)) |
| 2067 | return; |
| 2068 | |
Shawn Guo | 119fc00 | 2012-06-27 03:45:22 +0000 | [diff] [blame] | 2069 | err = devm_gpio_request_one(&pdev->dev, phy_reset, |
| 2070 | GPIOF_OUT_INIT_LOW, "phy-reset"); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2071 | if (err) { |
Fabio Estevam | 07dcf8e | 2013-02-18 10:20:31 +0000 | [diff] [blame] | 2072 | dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err); |
Shawn Guo | a9b2c8e | 2011-09-23 02:12:46 +0000 | [diff] [blame] | 2073 | return; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2074 | } |
Shawn Guo | a3caad0 | 2012-06-27 03:45:24 +0000 | [diff] [blame] | 2075 | msleep(msec); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2076 | gpio_set_value(phy_reset, 1); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2077 | } |
| 2078 | #else /* CONFIG_OF */ |
Fabio Estevam | 0c7768a | 2013-01-07 17:42:56 +0000 | [diff] [blame] | 2079 | static void fec_reset_phy(struct platform_device *pdev) |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2080 | { |
| 2081 | /* |
| 2082 | * In case of platform probe, the reset has been done |
| 2083 | * by machine code. |
| 2084 | */ |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2085 | } |
| 2086 | #endif /* CONFIG_OF */ |
| 2087 | |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 2088 | static int |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2089 | fec_probe(struct platform_device *pdev) |
| 2090 | { |
| 2091 | struct fec_enet_private *fep; |
Baruch Siach | 5eb32bd | 2010-05-24 00:36:13 -0700 | [diff] [blame] | 2092 | struct fec_platform_data *pdata; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2093 | struct net_device *ndev; |
| 2094 | int i, irq, ret = 0; |
| 2095 | struct resource *r; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2096 | const struct of_device_id *of_id; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 2097 | static int dev_id; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2098 | |
| 2099 | of_id = of_match_device(fec_dt_ids, &pdev->dev); |
| 2100 | if (of_id) |
| 2101 | pdev->id_entry = of_id->data; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2102 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2103 | /* Init network device */ |
| 2104 | ndev = alloc_etherdev(sizeof(struct fec_enet_private)); |
Fabio Estevam | 83e519b | 2013-03-11 07:32:55 +0000 | [diff] [blame] | 2105 | if (!ndev) |
| 2106 | return -ENOMEM; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2107 | |
| 2108 | SET_NETDEV_DEV(ndev, &pdev->dev); |
| 2109 | |
| 2110 | /* setup board info structure */ |
| 2111 | fep = netdev_priv(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2112 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 2113 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2114 | /* default enable pause frame auto negotiation */ |
| 2115 | if (pdev->id_entry && |
| 2116 | (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT)) |
| 2117 | fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 2118 | #endif |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2119 | |
Fabio Estevam | 399db75 | 2013-07-21 13:25:03 -0300 | [diff] [blame] | 2120 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Tushar Behera | 941e173 | 2013-06-10 17:05:05 +0530 | [diff] [blame] | 2121 | fep->hwp = devm_ioremap_resource(&pdev->dev, r); |
| 2122 | if (IS_ERR(fep->hwp)) { |
| 2123 | ret = PTR_ERR(fep->hwp); |
| 2124 | goto failed_ioremap; |
| 2125 | } |
| 2126 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2127 | fep->pdev = pdev; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 2128 | fep->dev_id = dev_id++; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2129 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2130 | fep->bufdesc_ex = 0; |
| 2131 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2132 | platform_set_drvdata(pdev, ndev); |
| 2133 | |
Guenter Roeck | 6c5f780 | 2013-04-02 09:35:10 +0000 | [diff] [blame] | 2134 | ret = of_get_phy_mode(pdev->dev.of_node); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2135 | if (ret < 0) { |
Jingoo Han | 94660ba | 2013-08-30 13:56:26 +0900 | [diff] [blame] | 2136 | pdata = dev_get_platdata(&pdev->dev); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2137 | if (pdata) |
| 2138 | fep->phy_interface = pdata->phy; |
| 2139 | else |
| 2140 | fep->phy_interface = PHY_INTERFACE_MODE_MII; |
| 2141 | } else { |
| 2142 | fep->phy_interface = ret; |
| 2143 | } |
| 2144 | |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2145 | fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
| 2146 | if (IS_ERR(fep->clk_ipg)) { |
| 2147 | ret = PTR_ERR(fep->clk_ipg); |
| 2148 | goto failed_clk; |
| 2149 | } |
| 2150 | |
| 2151 | fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); |
| 2152 | if (IS_ERR(fep->clk_ahb)) { |
| 2153 | ret = PTR_ERR(fep->clk_ahb); |
| 2154 | goto failed_clk; |
| 2155 | } |
| 2156 | |
Linus Torvalds | 38f56f3 | 2013-05-07 11:06:17 -0700 | [diff] [blame] | 2157 | /* enet_out is optional, depends on board */ |
| 2158 | fep->clk_enet_out = devm_clk_get(&pdev->dev, "enet_out"); |
| 2159 | if (IS_ERR(fep->clk_enet_out)) |
| 2160 | fep->clk_enet_out = NULL; |
| 2161 | |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2162 | fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp"); |
Fabio Estevam | 7f7d6c2 | 2013-02-21 09:21:50 +0000 | [diff] [blame] | 2163 | fep->bufdesc_ex = |
| 2164 | pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2165 | if (IS_ERR(fep->clk_ptp)) { |
Linus Torvalds | 38f56f3 | 2013-05-07 11:06:17 -0700 | [diff] [blame] | 2166 | fep->clk_ptp = NULL; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2167 | fep->bufdesc_ex = 0; |
| 2168 | } |
| 2169 | |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2170 | ret = clk_prepare_enable(fep->clk_ahb); |
| 2171 | if (ret) |
| 2172 | goto failed_clk; |
| 2173 | |
| 2174 | ret = clk_prepare_enable(fep->clk_ipg); |
| 2175 | if (ret) |
| 2176 | goto failed_clk_ipg; |
| 2177 | |
| 2178 | if (fep->clk_enet_out) { |
| 2179 | ret = clk_prepare_enable(fep->clk_enet_out); |
| 2180 | if (ret) |
| 2181 | goto failed_clk_enet_out; |
| 2182 | } |
| 2183 | |
| 2184 | if (fep->clk_ptp) { |
| 2185 | ret = clk_prepare_enable(fep->clk_ptp); |
| 2186 | if (ret) |
| 2187 | goto failed_clk_ptp; |
| 2188 | } |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2189 | |
Fabio Estevam | f4e9f3d | 2013-05-27 03:48:29 +0000 | [diff] [blame] | 2190 | fep->reg_phy = devm_regulator_get(&pdev->dev, "phy"); |
| 2191 | if (!IS_ERR(fep->reg_phy)) { |
| 2192 | ret = regulator_enable(fep->reg_phy); |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2193 | if (ret) { |
| 2194 | dev_err(&pdev->dev, |
| 2195 | "Failed to enable phy regulator: %d\n", ret); |
| 2196 | goto failed_regulator; |
| 2197 | } |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 2198 | } else { |
| 2199 | fep->reg_phy = NULL; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 2200 | } |
| 2201 | |
| 2202 | fec_reset_phy(pdev); |
| 2203 | |
Fabio Estevam | 7f7d6c2 | 2013-02-21 09:21:50 +0000 | [diff] [blame] | 2204 | if (fep->bufdesc_ex) |
Fabio Estevam | ca162a8 | 2013-06-07 10:48:00 +0000 | [diff] [blame] | 2205 | fec_ptp_init(pdev); |
Fabio Estevam | 7f7d6c2 | 2013-02-21 09:21:50 +0000 | [diff] [blame] | 2206 | |
| 2207 | ret = fec_enet_init(ndev); |
| 2208 | if (ret) |
| 2209 | goto failed_init; |
| 2210 | |
Xiao Jiang | c7c83d1 | 2011-09-29 02:15:56 +0000 | [diff] [blame] | 2211 | for (i = 0; i < FEC_IRQ_NUM; i++) { |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2212 | irq = platform_get_irq(pdev, i); |
Lothar Waßmann | 86f9f2c | 2011-12-07 21:59:28 +0000 | [diff] [blame] | 2213 | if (irq < 0) { |
| 2214 | if (i) |
| 2215 | break; |
| 2216 | ret = irq; |
| 2217 | goto failed_irq; |
| 2218 | } |
Fabio Estevam | 0d9b2ab | 2013-07-21 13:25:04 -0300 | [diff] [blame] | 2219 | ret = devm_request_irq(&pdev->dev, irq, fec_enet_interrupt, |
Michael Opdenacker | 44a272d | 2013-09-13 05:44:38 +0200 | [diff] [blame] | 2220 | 0, pdev->name, ndev); |
Fabio Estevam | 0d9b2ab | 2013-07-21 13:25:04 -0300 | [diff] [blame] | 2221 | if (ret) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2222 | goto failed_irq; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2223 | } |
| 2224 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2225 | ret = fec_enet_mii_init(pdev); |
| 2226 | if (ret) |
| 2227 | goto failed_mii_init; |
| 2228 | |
Oskar Schirmer | 03c698c | 2010-10-07 02:30:30 +0000 | [diff] [blame] | 2229 | /* Carrier starts down, phylib will bring it up */ |
| 2230 | netif_carrier_off(ndev); |
| 2231 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2232 | ret = register_netdev(ndev); |
| 2233 | if (ret) |
| 2234 | goto failed_register; |
| 2235 | |
Fabio Estevam | eb1d064 | 2013-04-13 07:25:36 +0000 | [diff] [blame] | 2236 | if (fep->bufdesc_ex && fep->ptp_clock) |
| 2237 | netdev_info(ndev, "registered PHC device %d\n", fep->dev_id); |
| 2238 | |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 2239 | INIT_DELAYED_WORK(&(fep->delay_work.delay_work), fec_enet_work); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2240 | return 0; |
| 2241 | |
| 2242 | failed_register: |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2243 | fec_enet_mii_remove(fep); |
| 2244 | failed_mii_init: |
Fabio Estevam | 7a2bbd8 | 2013-05-27 03:48:30 +0000 | [diff] [blame] | 2245 | failed_irq: |
Fabio Estevam | 7a2bbd8 | 2013-05-27 03:48:30 +0000 | [diff] [blame] | 2246 | failed_init: |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 2247 | if (fep->reg_phy) |
| 2248 | regulator_disable(fep->reg_phy); |
Shawn Guo | 5fa9c0f | 2012-06-27 03:45:21 +0000 | [diff] [blame] | 2249 | failed_regulator: |
Fabio Estevam | 9514fe7 | 2013-07-21 13:24:59 -0300 | [diff] [blame] | 2250 | if (fep->clk_ptp) |
| 2251 | clk_disable_unprepare(fep->clk_ptp); |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2252 | failed_clk_ptp: |
Fabio Estevam | d265cf4 | 2013-07-21 13:25:00 -0300 | [diff] [blame] | 2253 | if (fep->clk_enet_out) |
| 2254 | clk_disable_unprepare(fep->clk_enet_out); |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2255 | failed_clk_enet_out: |
Fabio Estevam | d265cf4 | 2013-07-21 13:25:00 -0300 | [diff] [blame] | 2256 | clk_disable_unprepare(fep->clk_ipg); |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2257 | failed_clk_ipg: |
Fabio Estevam | d265cf4 | 2013-07-21 13:25:00 -0300 | [diff] [blame] | 2258 | clk_disable_unprepare(fep->clk_ahb); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2259 | failed_clk: |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2260 | failed_ioremap: |
| 2261 | free_netdev(ndev); |
| 2262 | |
| 2263 | return ret; |
| 2264 | } |
| 2265 | |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 2266 | static int |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2267 | fec_drv_remove(struct platform_device *pdev) |
| 2268 | { |
| 2269 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 2270 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2271 | |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 2272 | cancel_delayed_work_sync(&(fep->delay_work.delay_work)); |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 2273 | unregister_netdev(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2274 | fec_enet_mii_remove(fep); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 2275 | del_timer_sync(&fep->time_keep); |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 2276 | if (fep->reg_phy) |
| 2277 | regulator_disable(fep->reg_phy); |
Fabio Estevam | 9514fe7 | 2013-07-21 13:24:59 -0300 | [diff] [blame] | 2278 | if (fep->clk_ptp) |
| 2279 | clk_disable_unprepare(fep->clk_ptp); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 2280 | if (fep->ptp_clock) |
| 2281 | ptp_clock_unregister(fep->ptp_clock); |
Fabio Estevam | 9514fe7 | 2013-07-21 13:24:59 -0300 | [diff] [blame] | 2282 | if (fep->clk_enet_out) |
| 2283 | clk_disable_unprepare(fep->clk_enet_out); |
Sascha Hauer | f4d40de | 2012-03-07 09:30:49 +0100 | [diff] [blame] | 2284 | clk_disable_unprepare(fep->clk_ipg); |
Fabio Estevam | d265cf4 | 2013-07-21 13:25:00 -0300 | [diff] [blame] | 2285 | clk_disable_unprepare(fep->clk_ahb); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2286 | free_netdev(ndev); |
Uwe Kleine-König | 28e2188 | 2011-01-13 21:44:18 +0100 | [diff] [blame] | 2287 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2288 | return 0; |
| 2289 | } |
| 2290 | |
Fabio Estevam | bf7bfd7 | 2013-04-16 08:17:46 +0000 | [diff] [blame] | 2291 | #ifdef CONFIG_PM_SLEEP |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2292 | static int |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2293 | fec_suspend(struct device *dev) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2294 | { |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2295 | struct net_device *ndev = dev_get_drvdata(dev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2296 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2297 | |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2298 | if (netif_running(ndev)) { |
| 2299 | fec_stop(ndev); |
| 2300 | netif_device_detach(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2301 | } |
Fabio Estevam | 79820e7 | 2013-07-21 13:25:01 -0300 | [diff] [blame] | 2302 | if (fep->clk_ptp) |
| 2303 | clk_disable_unprepare(fep->clk_ptp); |
Fabio Estevam | 9514fe7 | 2013-07-21 13:24:59 -0300 | [diff] [blame] | 2304 | if (fep->clk_enet_out) |
| 2305 | clk_disable_unprepare(fep->clk_enet_out); |
Sascha Hauer | f4d40de | 2012-03-07 09:30:49 +0100 | [diff] [blame] | 2306 | clk_disable_unprepare(fep->clk_ipg); |
Fabio Estevam | d265cf4 | 2013-07-21 13:25:00 -0300 | [diff] [blame] | 2307 | clk_disable_unprepare(fep->clk_ahb); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2308 | |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 2309 | if (fep->reg_phy) |
| 2310 | regulator_disable(fep->reg_phy); |
| 2311 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2312 | return 0; |
| 2313 | } |
| 2314 | |
| 2315 | static int |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2316 | fec_resume(struct device *dev) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2317 | { |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2318 | struct net_device *ndev = dev_get_drvdata(dev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2319 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 2320 | int ret; |
| 2321 | |
| 2322 | if (fep->reg_phy) { |
| 2323 | ret = regulator_enable(fep->reg_phy); |
| 2324 | if (ret) |
| 2325 | return ret; |
| 2326 | } |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2327 | |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2328 | ret = clk_prepare_enable(fep->clk_ahb); |
| 2329 | if (ret) |
| 2330 | goto failed_clk_ahb; |
| 2331 | |
| 2332 | ret = clk_prepare_enable(fep->clk_ipg); |
| 2333 | if (ret) |
| 2334 | goto failed_clk_ipg; |
| 2335 | |
| 2336 | if (fep->clk_enet_out) { |
| 2337 | ret = clk_prepare_enable(fep->clk_enet_out); |
| 2338 | if (ret) |
| 2339 | goto failed_clk_enet_out; |
| 2340 | } |
| 2341 | |
| 2342 | if (fep->clk_ptp) { |
| 2343 | ret = clk_prepare_enable(fep->clk_ptp); |
| 2344 | if (ret) |
| 2345 | goto failed_clk_ptp; |
| 2346 | } |
| 2347 | |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2348 | if (netif_running(ndev)) { |
| 2349 | fec_restart(ndev, fep->full_duplex); |
| 2350 | netif_device_attach(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2351 | } |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 2352 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2353 | return 0; |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 2354 | |
| 2355 | failed_clk_ptp: |
| 2356 | if (fep->clk_enet_out) |
| 2357 | clk_disable_unprepare(fep->clk_enet_out); |
| 2358 | failed_clk_enet_out: |
| 2359 | clk_disable_unprepare(fep->clk_ipg); |
| 2360 | failed_clk_ipg: |
| 2361 | clk_disable_unprepare(fep->clk_ahb); |
| 2362 | failed_clk_ahb: |
| 2363 | if (fep->reg_phy) |
| 2364 | regulator_disable(fep->reg_phy); |
| 2365 | return ret; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2366 | } |
Fabio Estevam | bf7bfd7 | 2013-04-16 08:17:46 +0000 | [diff] [blame] | 2367 | #endif /* CONFIG_PM_SLEEP */ |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2368 | |
Fabio Estevam | bf7bfd7 | 2013-04-16 08:17:46 +0000 | [diff] [blame] | 2369 | static SIMPLE_DEV_PM_OPS(fec_pm_ops, fec_suspend, fec_resume); |
Denis Kirjanov | 59d4289 | 2010-06-02 09:27:04 +0000 | [diff] [blame] | 2370 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2371 | static struct platform_driver fec_driver = { |
| 2372 | .driver = { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 2373 | .name = DRIVER_NAME, |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2374 | .owner = THIS_MODULE, |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2375 | .pm = &fec_pm_ops, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 2376 | .of_match_table = fec_dt_ids, |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2377 | }, |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 2378 | .id_table = fec_devtype, |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 2379 | .probe = fec_probe, |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 2380 | .remove = fec_drv_remove, |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 2381 | }; |
| 2382 | |
Fabio Estevam | aaca237 | 2012-01-23 16:44:50 +0000 | [diff] [blame] | 2383 | module_platform_driver(fec_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | |
Fabio Estevam | f8c0aca | 2013-07-20 16:20:36 -0300 | [diff] [blame] | 2385 | MODULE_ALIAS("platform:"DRIVER_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | MODULE_LICENSE("GPL"); |