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> |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 27 | #include <linux/pm_runtime.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/ptrace.h> |
| 29 | #include <linux/errno.h> |
| 30 | #include <linux/ioport.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/delay.h> |
| 34 | #include <linux/netdevice.h> |
| 35 | #include <linux/etherdevice.h> |
| 36 | #include <linux/skbuff.h> |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 37 | #include <linux/in.h> |
| 38 | #include <linux/ip.h> |
| 39 | #include <net/ip.h> |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 40 | #include <net/tso.h> |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 41 | #include <linux/tcp.h> |
| 42 | #include <linux/udp.h> |
| 43 | #include <linux/icmp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/spinlock.h> |
| 45 | #include <linux/workqueue.h> |
| 46 | #include <linux/bitops.h> |
Sascha Hauer | 6f501b1 | 2009-01-28 23:03:05 +0000 | [diff] [blame] | 47 | #include <linux/io.h> |
| 48 | #include <linux/irq.h> |
Sascha Hauer | 196719e | 2009-01-28 23:03:10 +0000 | [diff] [blame] | 49 | #include <linux/clk.h> |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 50 | #include <linux/platform_device.h> |
Andrew Lunn | 7f85442 | 2016-01-06 20:11:18 +0100 | [diff] [blame] | 51 | #include <linux/mdio.h> |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 52 | #include <linux/phy.h> |
Baruch Siach | 5eb32bd | 2010-05-24 00:36:13 -0700 | [diff] [blame] | 53 | #include <linux/fec.h> |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 54 | #include <linux/of.h> |
| 55 | #include <linux/of_device.h> |
| 56 | #include <linux/of_gpio.h> |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 57 | #include <linux/of_mdio.h> |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 58 | #include <linux/of_net.h> |
Shawn Guo | 5fa9c0f | 2012-06-27 03:45:21 +0000 | [diff] [blame] | 59 | #include <linux/regulator/consumer.h> |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 60 | #include <linux/if_vlan.h> |
Fabio Estevam | a68ab98 | 2014-06-02 15:44:30 -0300 | [diff] [blame] | 61 | #include <linux/pinctrl/consumer.h> |
Frank Li | c259c13 | 2014-10-03 14:29:14 -0700 | [diff] [blame] | 62 | #include <linux/prefetch.h> |
Lucas Stach | 2938090 | 2016-06-03 18:31:19 +0200 | [diff] [blame] | 63 | #include <soc/imx/cpuidle.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Greg Ungerer | 080853a | 2007-07-30 16:28:46 +1000 | [diff] [blame] | 65 | #include <asm/cacheflush.h> |
Sascha Hauer | 196719e | 2009-01-28 23:03:10 +0000 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #include "fec.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Christoph Müllner | 772e42b | 2013-06-27 21:18:23 +0200 | [diff] [blame] | 69 | static void set_multicast_list(struct net_device *ndev); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 70 | static void fec_enet_itr_coal_init(struct net_device *ndev); |
Christoph Müllner | 772e42b | 2013-06-27 21:18:23 +0200 | [diff] [blame] | 71 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 72 | #define DRIVER_NAME "fec" |
| 73 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 74 | #define FEC_ENET_GET_QUQUE(_x) ((_x == 0) ? 1 : ((_x == 1) ? 2 : 0)) |
| 75 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 76 | /* Pause frame feild and FIFO threshold */ |
| 77 | #define FEC_ENET_FCE (1 << 5) |
| 78 | #define FEC_ENET_RSEM_V 0x84 |
| 79 | #define FEC_ENET_RSFL_V 16 |
| 80 | #define FEC_ENET_RAEM_V 0x8 |
| 81 | #define FEC_ENET_RAFL_V 0x8 |
| 82 | #define FEC_ENET_OPD_V 0xFFF0 |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 83 | #define FEC_MDIO_PM_TIMEOUT 100 /* ms */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 84 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 85 | static struct platform_device_id fec_devtype[] = { |
| 86 | { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 87 | /* keep it for coldfire */ |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 88 | .name = DRIVER_NAME, |
| 89 | .driver_data = 0, |
| 90 | }, { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 91 | .name = "imx25-fec", |
Eric Nelson | 653d37d | 2016-09-24 07:42:17 -0700 | [diff] [blame] | 92 | .driver_data = FEC_QUIRK_USE_GASKET, |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 93 | }, { |
| 94 | .name = "imx27-fec", |
Eric Nelson | 97dc499 | 2016-09-24 07:42:18 -0700 | [diff] [blame] | 95 | .driver_data = 0, |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 96 | }, { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 97 | .name = "imx28-fec", |
Stefan Agner | 3d125f9 | 2015-01-14 00:20:21 +0100 | [diff] [blame] | 98 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME | |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 99 | FEC_QUIRK_SINGLE_MDIO | FEC_QUIRK_HAS_RACC, |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 100 | }, { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 101 | .name = "imx6q-fec", |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 102 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 103 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 104 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_ERR006358 | |
| 105 | FEC_QUIRK_HAS_RACC, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 106 | }, { |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 107 | .name = "mvf600-fec", |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 108 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_RACC, |
Jingchang Lu | ca7c4a4 | 2013-04-11 21:12:45 +0000 | [diff] [blame] | 109 | }, { |
Fugang Duan | 95a7747 | 2014-09-13 05:00:47 +0800 | [diff] [blame] | 110 | .name = "imx6sx-fec", |
| 111 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | |
| 112 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | |
Nimrod Andy | f88c7ed | 2014-09-23 15:40:56 +0800 | [diff] [blame] | 113 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_HAS_AVB | |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 114 | FEC_QUIRK_ERR007885 | FEC_QUIRK_BUG_CAPTURE | |
Fugang Duan | ff7566b | 2016-06-22 18:52:35 +0800 | [diff] [blame] | 115 | FEC_QUIRK_HAS_RACC | FEC_QUIRK_HAS_COALESCE, |
Fugang Duan | 95a7747 | 2014-09-13 05:00:47 +0800 | [diff] [blame] | 116 | }, { |
Fugang Duan | a51d3ab | 2016-06-22 18:52:36 +0800 | [diff] [blame] | 117 | .name = "imx6ul-fec", |
| 118 | .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | |
| 119 | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | |
| 120 | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_BUG_CAPTURE | |
| 121 | FEC_QUIRK_HAS_RACC | FEC_QUIRK_HAS_COALESCE, |
| 122 | }, { |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 123 | /* sentinel */ |
| 124 | } |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 125 | }; |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 126 | MODULE_DEVICE_TABLE(platform, fec_devtype); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 127 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 128 | enum imx_fec_type { |
Lothar Waßmann | a7dd321 | 2011-12-07 21:59:25 +0000 | [diff] [blame] | 129 | IMX25_FEC = 1, /* runs on i.mx25/50/53 */ |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 130 | IMX27_FEC, /* runs on i.mx27/35/51 */ |
| 131 | IMX28_FEC, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 132 | IMX6Q_FEC, |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 133 | MVF600_FEC, |
Fugang Duan | ba593e0 | 2014-09-13 05:00:53 +0800 | [diff] [blame] | 134 | IMX6SX_FEC, |
Fugang Duan | a51d3ab | 2016-06-22 18:52:36 +0800 | [diff] [blame] | 135 | IMX6UL_FEC, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 136 | }; |
| 137 | |
| 138 | static const struct of_device_id fec_dt_ids[] = { |
| 139 | { .compatible = "fsl,imx25-fec", .data = &fec_devtype[IMX25_FEC], }, |
| 140 | { .compatible = "fsl,imx27-fec", .data = &fec_devtype[IMX27_FEC], }, |
| 141 | { .compatible = "fsl,imx28-fec", .data = &fec_devtype[IMX28_FEC], }, |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 142 | { .compatible = "fsl,imx6q-fec", .data = &fec_devtype[IMX6Q_FEC], }, |
Shawn Guo | 3680354 | 2013-05-19 04:38:46 +0000 | [diff] [blame] | 143 | { .compatible = "fsl,mvf600-fec", .data = &fec_devtype[MVF600_FEC], }, |
Fugang Duan | ba593e0 | 2014-09-13 05:00:53 +0800 | [diff] [blame] | 144 | { .compatible = "fsl,imx6sx-fec", .data = &fec_devtype[IMX6SX_FEC], }, |
Fugang Duan | a51d3ab | 2016-06-22 18:52:36 +0800 | [diff] [blame] | 145 | { .compatible = "fsl,imx6ul-fec", .data = &fec_devtype[IMX6UL_FEC], }, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 146 | { /* sentinel */ } |
| 147 | }; |
| 148 | MODULE_DEVICE_TABLE(of, fec_dt_ids); |
| 149 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 150 | static unsigned char macaddr[ETH_ALEN]; |
| 151 | module_param_array(macaddr, byte, NULL, 0); |
| 152 | MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address"); |
| 153 | |
Greg Ungerer | 87f4abb | 2008-06-06 15:55:36 +1000 | [diff] [blame] | 154 | #if defined(CONFIG_M5272) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /* |
| 156 | * Some hardware gets it MAC address out of local flash memory. |
| 157 | * if this is non-zero then assume it is the address to get MAC from. |
| 158 | */ |
| 159 | #if defined(CONFIG_NETtel) |
| 160 | #define FEC_FLASHMAC 0xf0006006 |
| 161 | #elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES) |
| 162 | #define FEC_FLASHMAC 0xf0006000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | #elif defined(CONFIG_CANCam) |
| 164 | #define FEC_FLASHMAC 0xf0020000 |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 165 | #elif defined (CONFIG_M5272C3) |
| 166 | #define FEC_FLASHMAC (0xffe04000 + 4) |
| 167 | #elif defined(CONFIG_MOD5272) |
Lothar Waßmann | a7dd321 | 2011-12-07 21:59:25 +0000 | [diff] [blame] | 168 | #define FEC_FLASHMAC 0xffc0406b |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | #else |
| 170 | #define FEC_FLASHMAC 0 |
| 171 | #endif |
Greg Ungerer | 43be636 | 2009-02-26 22:42:51 -0800 | [diff] [blame] | 172 | #endif /* CONFIG_M5272 */ |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 173 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 174 | /* The FEC stores dest/src/type/vlan, data, and checksum for receive packets. |
Andrew Lunn | 8c38f31 | 2017-07-30 19:36:05 +0200 | [diff] [blame] | 175 | * |
| 176 | * 2048 byte skbufs are allocated. However, alignment requirements |
| 177 | * varies between FEC variants. Worst case is 64, so round down by 64. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | */ |
Andrew Lunn | 8c38f31 | 2017-07-30 19:36:05 +0200 | [diff] [blame] | 179 | #define PKT_MAXBUF_SIZE (round_down(2048 - 64, 64)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | #define PKT_MINBUF_SIZE 64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 182 | /* FEC receive acceleration */ |
| 183 | #define FEC_RACC_IPDIS (1 << 1) |
| 184 | #define FEC_RACC_PRODIS (1 << 2) |
Eric Nelson | 3ac72b7 | 2016-09-24 07:42:19 -0700 | [diff] [blame] | 185 | #define FEC_RACC_SHIFT16 BIT(7) |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 186 | #define FEC_RACC_OPTIONS (FEC_RACC_IPDIS | FEC_RACC_PRODIS) |
| 187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | /* |
Matt Waddel | 6b26529 | 2006-06-27 13:10:56 +1000 | [diff] [blame] | 189 | * 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] | 190 | * size bits. Other FEC hardware does not, so we need to take that into |
| 191 | * account when setting it. |
| 192 | */ |
Greg Ungerer | 562d2f8 | 2005-11-07 14:09:50 +1000 | [diff] [blame] | 193 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ |
Uwe Kleine-König | 085e79e | 2011-01-17 09:52:18 +0100 | [diff] [blame] | 194 | defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) |
| 196 | #else |
| 197 | #define OPT_FRAME_SIZE 0 |
| 198 | #endif |
| 199 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 200 | /* FEC MII MMFR bits definition */ |
| 201 | #define FEC_MMFR_ST (1 << 30) |
| 202 | #define FEC_MMFR_OP_READ (2 << 28) |
| 203 | #define FEC_MMFR_OP_WRITE (1 << 28) |
| 204 | #define FEC_MMFR_PA(v) ((v & 0x1f) << 23) |
| 205 | #define FEC_MMFR_RA(v) ((v & 0x1f) << 18) |
| 206 | #define FEC_MMFR_TA (2 << 16) |
| 207 | #define FEC_MMFR_DATA(v) (v & 0xffff) |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 208 | /* FEC ECR bits definition */ |
| 209 | #define FEC_ECR_MAGICEN (1 << 2) |
| 210 | #define FEC_ECR_SLEEP (1 << 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Rogerio Pimentel | c3b084c | 2011-12-27 14:07:37 -0500 | [diff] [blame] | 212 | #define FEC_MII_TIMEOUT 30000 /* us */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 214 | /* Transmitter timeout */ |
| 215 | #define TX_TIMEOUT (2 * HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 217 | #define FEC_PAUSE_FLAG_AUTONEG 0x1 |
| 218 | #define FEC_PAUSE_FLAG_ENABLE 0x2 |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 219 | #define FEC_WOL_HAS_MAGIC_PACKET (0x1 << 0) |
| 220 | #define FEC_WOL_FLAG_ENABLE (0x1 << 1) |
| 221 | #define FEC_WOL_FLAG_SLEEP_ON (0x1 << 2) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 222 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 223 | #define COPYBREAK_DEFAULT 256 |
| 224 | |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 225 | #define TSO_HEADER_SIZE 128 |
| 226 | /* Max number of allowed TCP segments for software TSO */ |
| 227 | #define FEC_MAX_TSO_SEGS 100 |
| 228 | #define FEC_MAX_SKB_DESCS (FEC_MAX_TSO_SEGS * 2 + MAX_SKB_FRAGS) |
| 229 | |
| 230 | #define IS_TSO_HEADER(txq, addr) \ |
| 231 | ((addr >= txq->tso_hdrs_dma) && \ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 232 | (addr < txq->tso_hdrs_dma + txq->bd.ring_size * TSO_HEADER_SIZE)) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 233 | |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 234 | static int mii_cnt; |
| 235 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 236 | static struct bufdesc *fec_enet_get_nextdesc(struct bufdesc *bdp, |
| 237 | struct bufdesc_prop *bd) |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 238 | { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 239 | return (bdp >= bd->last) ? bd->base |
| 240 | : (struct bufdesc *)(((unsigned)bdp) + bd->dsize); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 243 | static struct bufdesc *fec_enet_get_prevdesc(struct bufdesc *bdp, |
| 244 | struct bufdesc_prop *bd) |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 245 | { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 246 | return (bdp <= bd->base) ? bd->last |
| 247 | : (struct bufdesc *)(((unsigned)bdp) - bd->dsize); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 248 | } |
| 249 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 250 | static int fec_enet_get_bd_index(struct bufdesc *bdp, |
| 251 | struct bufdesc_prop *bd) |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 252 | { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 253 | return ((const char *)bdp - (const char *)bd->base) >> bd->dsize_log2; |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 254 | } |
| 255 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 256 | static int fec_enet_get_free_txdesc_num(struct fec_enet_priv_tx_q *txq) |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 257 | { |
| 258 | int entries; |
| 259 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 260 | entries = (((const char *)txq->dirty_tx - |
| 261 | (const char *)txq->bd.cur) >> txq->bd.dsize_log2) - 1; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 262 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 263 | return entries >= 0 ? entries : entries + txq->bd.ring_size; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 264 | } |
| 265 | |
Lothar Waßmann | c20e599 | 2014-11-17 10:51:24 +0100 | [diff] [blame] | 266 | static void swap_buffer(void *bufaddr, int len) |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 267 | { |
| 268 | int i; |
| 269 | unsigned int *buf = bufaddr; |
| 270 | |
Lothar Waßmann | 7b487d0 | 2014-11-17 10:51:23 +0100 | [diff] [blame] | 271 | for (i = 0; i < len; i += 4, buf++) |
Lothar Waßmann | e453789 | 2014-11-17 10:51:22 +0100 | [diff] [blame] | 272 | swab32s(buf); |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 273 | } |
| 274 | |
Lothar Waßmann | 1310b54 | 2014-11-07 10:02:47 +0100 | [diff] [blame] | 275 | static void swap_buffer2(void *dst_buf, void *src_buf, int len) |
| 276 | { |
| 277 | int i; |
| 278 | unsigned int *src = src_buf; |
| 279 | unsigned int *dst = dst_buf; |
| 280 | |
| 281 | for (i = 0; i < len; i += 4, src++, dst++) |
| 282 | *dst = swab32p(src); |
| 283 | } |
| 284 | |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 285 | static void fec_dump(struct net_device *ndev) |
| 286 | { |
| 287 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 288 | struct bufdesc *bdp; |
| 289 | struct fec_enet_priv_tx_q *txq; |
| 290 | int index = 0; |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 291 | |
| 292 | netdev_info(ndev, "TX ring dump\n"); |
| 293 | pr_info("Nr SC addr len SKB\n"); |
| 294 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 295 | txq = fep->tx_queue[0]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 296 | bdp = txq->bd.base; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 297 | |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 298 | do { |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 299 | pr_info("%3u %c%c 0x%04x 0x%08x %4u %p\n", |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 300 | index, |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 301 | bdp == txq->bd.cur ? 'S' : ' ', |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 302 | bdp == txq->dirty_tx ? 'H' : ' ', |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 303 | fec16_to_cpu(bdp->cbd_sc), |
| 304 | fec32_to_cpu(bdp->cbd_bufaddr), |
| 305 | fec16_to_cpu(bdp->cbd_datlen), |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 306 | txq->tx_skbuff[index]); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 307 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 308 | index++; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 309 | } while (bdp != txq->bd.base); |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 310 | } |
| 311 | |
Fugang Duan | 62a02c9 | 2014-06-18 08:33:52 +0800 | [diff] [blame] | 312 | static inline bool is_ipv4_pkt(struct sk_buff *skb) |
| 313 | { |
| 314 | return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4; |
| 315 | } |
| 316 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 317 | static int |
| 318 | fec_enet_clear_csum(struct sk_buff *skb, struct net_device *ndev) |
| 319 | { |
| 320 | /* Only run for packets requiring a checksum. */ |
| 321 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 322 | return 0; |
| 323 | |
| 324 | if (unlikely(skb_cow_head(skb, 0))) |
| 325 | return -1; |
| 326 | |
Fugang Duan | 62a02c9 | 2014-06-18 08:33:52 +0800 | [diff] [blame] | 327 | if (is_ipv4_pkt(skb)) |
| 328 | ip_hdr(skb)->check = 0; |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 329 | *(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) = 0; |
| 330 | |
| 331 | return 0; |
| 332 | } |
| 333 | |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 334 | static struct bufdesc * |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 335 | fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, |
| 336 | struct sk_buff *skb, |
| 337 | struct net_device *ndev) |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 338 | { |
| 339 | struct fec_enet_private *fep = netdev_priv(ndev); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 340 | struct bufdesc *bdp = txq->bd.cur; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 341 | struct bufdesc_ex *ebdp; |
| 342 | int nr_frags = skb_shinfo(skb)->nr_frags; |
| 343 | int frag, frag_len; |
| 344 | unsigned short status; |
| 345 | unsigned int estatus = 0; |
| 346 | skb_frag_t *this_frag; |
| 347 | unsigned int index; |
| 348 | void *bufaddr; |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 349 | dma_addr_t addr; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 350 | int i; |
| 351 | |
| 352 | for (frag = 0; frag < nr_frags; frag++) { |
| 353 | this_frag = &skb_shinfo(skb)->frags[frag]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 354 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 355 | ebdp = (struct bufdesc_ex *)bdp; |
| 356 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 357 | status = fec16_to_cpu(bdp->cbd_sc); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 358 | status &= ~BD_ENET_TX_STATS; |
| 359 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); |
| 360 | frag_len = skb_shinfo(skb)->frags[frag].size; |
| 361 | |
| 362 | /* Handle the last BD specially */ |
| 363 | if (frag == nr_frags - 1) { |
| 364 | status |= (BD_ENET_TX_INTR | BD_ENET_TX_LAST); |
| 365 | if (fep->bufdesc_ex) { |
| 366 | estatus |= BD_ENET_TX_INT; |
| 367 | if (unlikely(skb_shinfo(skb)->tx_flags & |
| 368 | SKBTX_HW_TSTAMP && fep->hwts_tx_en)) |
| 369 | estatus |= BD_ENET_TX_TS; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | if (fep->bufdesc_ex) { |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 374 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 375 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 376 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 377 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; |
| 378 | ebdp->cbd_bdu = 0; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 379 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | bufaddr = page_address(this_frag->page.p) + this_frag->page_offset; |
| 383 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 384 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 385 | if (((unsigned long) bufaddr) & fep->tx_align || |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 386 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 387 | memcpy(txq->tx_bounce[index], bufaddr, frag_len); |
| 388 | bufaddr = txq->tx_bounce[index]; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 389 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 390 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 391 | swap_buffer(bufaddr, frag_len); |
| 392 | } |
| 393 | |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 394 | addr = dma_map_single(&fep->pdev->dev, bufaddr, frag_len, |
| 395 | DMA_TO_DEVICE); |
| 396 | if (dma_mapping_error(&fep->pdev->dev, addr)) { |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 397 | if (net_ratelimit()) |
| 398 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
| 399 | goto dma_mapping_error; |
| 400 | } |
| 401 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 402 | bdp->cbd_bufaddr = cpu_to_fec32(addr); |
| 403 | bdp->cbd_datlen = cpu_to_fec16(frag_len); |
Troy Kisky | be29346 | 2016-02-05 14:52:49 -0700 | [diff] [blame] | 404 | /* Make sure the updates to rest of the descriptor are |
| 405 | * performed before transferring ownership. |
| 406 | */ |
| 407 | wmb(); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 408 | bdp->cbd_sc = cpu_to_fec16(status); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 409 | } |
| 410 | |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 411 | return bdp; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 412 | dma_mapping_error: |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 413 | bdp = txq->bd.cur; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 414 | for (i = 0; i < frag; i++) { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 415 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 416 | dma_unmap_single(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr), |
| 417 | fec16_to_cpu(bdp->cbd_datlen), DMA_TO_DEVICE); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 418 | } |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 419 | return ERR_PTR(-ENOMEM); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 420 | } |
| 421 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 422 | static int fec_enet_txq_submit_skb(struct fec_enet_priv_tx_q *txq, |
| 423 | struct sk_buff *skb, struct net_device *ndev) |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 424 | { |
| 425 | struct fec_enet_private *fep = netdev_priv(ndev); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 426 | int nr_frags = skb_shinfo(skb)->nr_frags; |
| 427 | struct bufdesc *bdp, *last_bdp; |
| 428 | void *bufaddr; |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 429 | dma_addr_t addr; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 430 | unsigned short status; |
| 431 | unsigned short buflen; |
| 432 | unsigned int estatus = 0; |
| 433 | unsigned int index; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 434 | int entries_free; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 435 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 436 | entries_free = fec_enet_get_free_txdesc_num(txq); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 437 | if (entries_free < MAX_SKB_FRAGS + 1) { |
| 438 | dev_kfree_skb_any(skb); |
| 439 | if (net_ratelimit()) |
| 440 | netdev_err(ndev, "NOT enough BD for SG!\n"); |
| 441 | return NETDEV_TX_OK; |
| 442 | } |
| 443 | |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 444 | /* Protocol checksum off-load for TCP and UDP. */ |
| 445 | if (fec_enet_clear_csum(skb, ndev)) { |
| 446 | dev_kfree_skb_any(skb); |
| 447 | return NETDEV_TX_OK; |
| 448 | } |
| 449 | |
| 450 | /* Fill in a Tx ring entry */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 451 | bdp = txq->bd.cur; |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 452 | last_bdp = bdp; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 453 | status = fec16_to_cpu(bdp->cbd_sc); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 454 | status &= ~BD_ENET_TX_STATS; |
| 455 | |
| 456 | /* Set buffer length and buffer pointer */ |
| 457 | bufaddr = skb->data; |
| 458 | buflen = skb_headlen(skb); |
| 459 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 460 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 461 | if (((unsigned long) bufaddr) & fep->tx_align || |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 462 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 463 | memcpy(txq->tx_bounce[index], skb->data, buflen); |
| 464 | bufaddr = txq->tx_bounce[index]; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 465 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 466 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 467 | swap_buffer(bufaddr, buflen); |
| 468 | } |
| 469 | |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 470 | /* Push the data cache so the CPM does not get stale memory data. */ |
| 471 | addr = dma_map_single(&fep->pdev->dev, bufaddr, buflen, DMA_TO_DEVICE); |
| 472 | if (dma_mapping_error(&fep->pdev->dev, addr)) { |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 473 | dev_kfree_skb_any(skb); |
| 474 | if (net_ratelimit()) |
| 475 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
| 476 | return NETDEV_TX_OK; |
| 477 | } |
| 478 | |
| 479 | if (nr_frags) { |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 480 | last_bdp = fec_enet_txq_submit_frag_skb(txq, skb, ndev); |
Troy Kisky | fc75ba5 | 2016-02-05 14:52:50 -0700 | [diff] [blame] | 481 | if (IS_ERR(last_bdp)) { |
| 482 | dma_unmap_single(&fep->pdev->dev, addr, |
| 483 | buflen, DMA_TO_DEVICE); |
| 484 | dev_kfree_skb_any(skb); |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 485 | return NETDEV_TX_OK; |
Troy Kisky | fc75ba5 | 2016-02-05 14:52:50 -0700 | [diff] [blame] | 486 | } |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 487 | } else { |
| 488 | status |= (BD_ENET_TX_INTR | BD_ENET_TX_LAST); |
| 489 | if (fep->bufdesc_ex) { |
| 490 | estatus = BD_ENET_TX_INT; |
| 491 | if (unlikely(skb_shinfo(skb)->tx_flags & |
| 492 | SKBTX_HW_TSTAMP && fep->hwts_tx_en)) |
| 493 | estatus |= BD_ENET_TX_TS; |
| 494 | } |
| 495 | } |
Troy Kisky | fc75ba5 | 2016-02-05 14:52:50 -0700 | [diff] [blame] | 496 | bdp->cbd_bufaddr = cpu_to_fec32(addr); |
| 497 | bdp->cbd_datlen = cpu_to_fec16(buflen); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 498 | |
| 499 | if (fep->bufdesc_ex) { |
| 500 | |
| 501 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
| 502 | |
| 503 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && |
| 504 | fep->hwts_tx_en)) |
| 505 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
| 506 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 507 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 508 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
Nimrod Andy | befe821 | 2014-09-23 15:40:55 +0800 | [diff] [blame] | 509 | |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 510 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 511 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; |
| 512 | |
| 513 | ebdp->cbd_bdu = 0; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 514 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 515 | } |
| 516 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 517 | index = fec_enet_get_bd_index(last_bdp, &txq->bd); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 518 | /* Save skb pointer */ |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 519 | txq->tx_skbuff[index] = skb; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 520 | |
Troy Kisky | be29346 | 2016-02-05 14:52:49 -0700 | [diff] [blame] | 521 | /* Make sure the updates to rest of the descriptor are performed before |
| 522 | * transferring ownership. |
| 523 | */ |
| 524 | wmb(); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 525 | |
| 526 | /* Send it on its way. Tell FEC it's ready, interrupt when done, |
| 527 | * it's the last BD of the frame, and to put the CRC on the end. |
| 528 | */ |
| 529 | status |= (BD_ENET_TX_READY | BD_ENET_TX_TC); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 530 | bdp->cbd_sc = cpu_to_fec16(status); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 531 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 532 | /* If this was the last BD in the ring, start at the beginning again. */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 533 | bdp = fec_enet_get_nextdesc(last_bdp, &txq->bd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
Eric Dumazet | 7a2a845 | 2013-12-19 10:53:02 -0800 | [diff] [blame] | 535 | skb_tx_timestamp(skb); |
| 536 | |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 537 | /* Make sure the update to bdp and tx_skbuff are performed before |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 538 | * txq->bd.cur. |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 539 | */ |
| 540 | wmb(); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 541 | txq->bd.cur = bdp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 543 | /* Trigger transmission start */ |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 544 | writel(0, txq->bd.reg_desc_active); |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 545 | |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 546 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | } |
| 548 | |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 549 | static int |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 550 | fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, |
| 551 | struct net_device *ndev, |
| 552 | struct bufdesc *bdp, int index, char *data, |
| 553 | int size, bool last_tcp, bool is_last) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 554 | { |
| 555 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabian Frederick | 61cd2eb | 2014-09-13 22:38:26 +0200 | [diff] [blame] | 556 | struct bufdesc_ex *ebdp = container_of(bdp, struct bufdesc_ex, desc); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 557 | unsigned short status; |
| 558 | unsigned int estatus = 0; |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 559 | dma_addr_t addr; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 560 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 561 | status = fec16_to_cpu(bdp->cbd_sc); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 562 | status &= ~BD_ENET_TX_STATS; |
| 563 | |
| 564 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 565 | |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 566 | if (((unsigned long) data) & fep->tx_align || |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 567 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 568 | memcpy(txq->tx_bounce[index], data, size); |
| 569 | data = txq->tx_bounce[index]; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 570 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 571 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 572 | swap_buffer(data, size); |
| 573 | } |
| 574 | |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 575 | addr = dma_map_single(&fep->pdev->dev, data, size, DMA_TO_DEVICE); |
| 576 | if (dma_mapping_error(&fep->pdev->dev, addr)) { |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 577 | dev_kfree_skb_any(skb); |
| 578 | if (net_ratelimit()) |
| 579 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
| 580 | return NETDEV_TX_BUSY; |
| 581 | } |
| 582 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 583 | bdp->cbd_datlen = cpu_to_fec16(size); |
| 584 | bdp->cbd_bufaddr = cpu_to_fec32(addr); |
Russell King | d6bf314 | 2014-07-08 00:23:19 +0100 | [diff] [blame] | 585 | |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 586 | if (fep->bufdesc_ex) { |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 587 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 588 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 589 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 590 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; |
| 591 | ebdp->cbd_bdu = 0; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 592 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | /* Handle the last BD specially */ |
| 596 | if (last_tcp) |
| 597 | status |= (BD_ENET_TX_LAST | BD_ENET_TX_TC); |
| 598 | if (is_last) { |
| 599 | status |= BD_ENET_TX_INTR; |
| 600 | if (fep->bufdesc_ex) |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 601 | ebdp->cbd_esc |= cpu_to_fec32(BD_ENET_TX_INT); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 602 | } |
| 603 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 604 | bdp->cbd_sc = cpu_to_fec16(status); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 605 | |
| 606 | return 0; |
| 607 | } |
| 608 | |
| 609 | static int |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 610 | fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, |
| 611 | struct sk_buff *skb, struct net_device *ndev, |
| 612 | struct bufdesc *bdp, int index) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 613 | { |
| 614 | struct fec_enet_private *fep = netdev_priv(ndev); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 615 | int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
Fabian Frederick | 61cd2eb | 2014-09-13 22:38:26 +0200 | [diff] [blame] | 616 | struct bufdesc_ex *ebdp = container_of(bdp, struct bufdesc_ex, desc); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 617 | void *bufaddr; |
| 618 | unsigned long dmabuf; |
| 619 | unsigned short status; |
| 620 | unsigned int estatus = 0; |
| 621 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 622 | status = fec16_to_cpu(bdp->cbd_sc); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 623 | status &= ~BD_ENET_TX_STATS; |
| 624 | status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); |
| 625 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 626 | bufaddr = txq->tso_hdrs + index * TSO_HEADER_SIZE; |
| 627 | dmabuf = txq->tso_hdrs_dma + index * TSO_HEADER_SIZE; |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 628 | if (((unsigned long)bufaddr) & fep->tx_align || |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 629 | fep->quirks & FEC_QUIRK_SWAP_FRAME) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 630 | memcpy(txq->tx_bounce[index], skb->data, hdr_len); |
| 631 | bufaddr = txq->tx_bounce[index]; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 632 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 633 | if (fep->quirks & FEC_QUIRK_SWAP_FRAME) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 634 | swap_buffer(bufaddr, hdr_len); |
| 635 | |
| 636 | dmabuf = dma_map_single(&fep->pdev->dev, bufaddr, |
| 637 | hdr_len, DMA_TO_DEVICE); |
| 638 | if (dma_mapping_error(&fep->pdev->dev, dmabuf)) { |
| 639 | dev_kfree_skb_any(skb); |
| 640 | if (net_ratelimit()) |
| 641 | netdev_err(ndev, "Tx DMA memory map failed\n"); |
| 642 | return NETDEV_TX_BUSY; |
| 643 | } |
| 644 | } |
| 645 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 646 | bdp->cbd_bufaddr = cpu_to_fec32(dmabuf); |
| 647 | bdp->cbd_datlen = cpu_to_fec16(hdr_len); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 648 | |
| 649 | if (fep->bufdesc_ex) { |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 650 | if (fep->quirks & FEC_QUIRK_HAS_AVB) |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 651 | estatus |= FEC_TX_BD_FTYPE(txq->bd.qid); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 652 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 653 | estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; |
| 654 | ebdp->cbd_bdu = 0; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 655 | ebdp->cbd_esc = cpu_to_fec32(estatus); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 656 | } |
| 657 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 658 | bdp->cbd_sc = cpu_to_fec16(status); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 659 | |
| 660 | return 0; |
| 661 | } |
| 662 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 663 | static int fec_enet_txq_submit_tso(struct fec_enet_priv_tx_q *txq, |
| 664 | struct sk_buff *skb, |
| 665 | struct net_device *ndev) |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 666 | { |
| 667 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 668 | int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| 669 | int total_len, data_left; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 670 | struct bufdesc *bdp = txq->bd.cur; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 671 | struct tso_t tso; |
| 672 | unsigned int index = 0; |
| 673 | int ret; |
| 674 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 675 | if (tso_count_descs(skb) >= fec_enet_get_free_txdesc_num(txq)) { |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 676 | dev_kfree_skb_any(skb); |
| 677 | if (net_ratelimit()) |
| 678 | netdev_err(ndev, "NOT enough BD for TSO!\n"); |
| 679 | return NETDEV_TX_OK; |
| 680 | } |
| 681 | |
| 682 | /* Protocol checksum off-load for TCP and UDP. */ |
| 683 | if (fec_enet_clear_csum(skb, ndev)) { |
| 684 | dev_kfree_skb_any(skb); |
| 685 | return NETDEV_TX_OK; |
| 686 | } |
| 687 | |
| 688 | /* Initialize the TSO handler, and prepare the first payload */ |
| 689 | tso_start(skb, &tso); |
| 690 | |
| 691 | total_len = skb->len - hdr_len; |
| 692 | while (total_len > 0) { |
| 693 | char *hdr; |
| 694 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 695 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 696 | data_left = min_t(int, skb_shinfo(skb)->gso_size, total_len); |
| 697 | total_len -= data_left; |
| 698 | |
| 699 | /* prepare packet headers: MAC + IP + TCP */ |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 700 | hdr = txq->tso_hdrs + index * TSO_HEADER_SIZE; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 701 | tso_build_hdr(skb, hdr, &tso, data_left, total_len == 0); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 702 | ret = fec_enet_txq_put_hdr_tso(txq, skb, ndev, bdp, index); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 703 | if (ret) |
| 704 | goto err_release; |
| 705 | |
| 706 | while (data_left > 0) { |
| 707 | int size; |
| 708 | |
| 709 | size = min_t(int, tso.size, data_left); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 710 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
| 711 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 712 | ret = fec_enet_txq_put_data_tso(txq, skb, ndev, |
| 713 | bdp, index, |
| 714 | tso.data, size, |
| 715 | size == data_left, |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 716 | total_len == 0); |
| 717 | if (ret) |
| 718 | goto err_release; |
| 719 | |
| 720 | data_left -= size; |
| 721 | tso_build_data(skb, &tso, size); |
| 722 | } |
| 723 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 724 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | /* Save skb pointer */ |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 728 | txq->tx_skbuff[index] = skb; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 729 | |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 730 | skb_tx_timestamp(skb); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 731 | txq->bd.cur = bdp; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 732 | |
| 733 | /* Trigger transmission start */ |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 734 | if (!(fep->quirks & FEC_QUIRK_ERR007885) || |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 735 | !readl(txq->bd.reg_desc_active) || |
| 736 | !readl(txq->bd.reg_desc_active) || |
| 737 | !readl(txq->bd.reg_desc_active) || |
| 738 | !readl(txq->bd.reg_desc_active)) |
| 739 | writel(0, txq->bd.reg_desc_active); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 740 | |
| 741 | return 0; |
| 742 | |
| 743 | err_release: |
| 744 | /* TODO: Release all used data descriptors for TSO */ |
| 745 | return ret; |
| 746 | } |
| 747 | |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 748 | static netdev_tx_t |
| 749 | fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
| 750 | { |
| 751 | struct fec_enet_private *fep = netdev_priv(ndev); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 752 | int entries_free; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 753 | unsigned short queue; |
| 754 | struct fec_enet_priv_tx_q *txq; |
| 755 | struct netdev_queue *nq; |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 756 | int ret; |
| 757 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 758 | queue = skb_get_queue_mapping(skb); |
| 759 | txq = fep->tx_queue[queue]; |
| 760 | nq = netdev_get_tx_queue(ndev, queue); |
| 761 | |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 762 | if (skb_is_gso(skb)) |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 763 | ret = fec_enet_txq_submit_tso(txq, skb, ndev); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 764 | else |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 765 | ret = fec_enet_txq_submit_skb(txq, skb, ndev); |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 766 | if (ret) |
| 767 | return ret; |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 768 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 769 | entries_free = fec_enet_get_free_txdesc_num(txq); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 770 | if (entries_free <= txq->tx_stop_threshold) |
| 771 | netif_tx_stop_queue(nq); |
Nimrod Andy | 61a4427 | 2014-06-12 08:16:18 +0800 | [diff] [blame] | 772 | |
| 773 | return NETDEV_TX_OK; |
| 774 | } |
| 775 | |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 776 | /* Init RX & TX buffer descriptors |
| 777 | */ |
| 778 | static void fec_enet_bd_init(struct net_device *dev) |
| 779 | { |
| 780 | struct fec_enet_private *fep = netdev_priv(dev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 781 | struct fec_enet_priv_tx_q *txq; |
| 782 | struct fec_enet_priv_rx_q *rxq; |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 783 | struct bufdesc *bdp; |
| 784 | unsigned int i; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 785 | unsigned int q; |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 786 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 787 | for (q = 0; q < fep->num_rx_queues; q++) { |
| 788 | /* Initialize the receive buffer descriptors. */ |
| 789 | rxq = fep->rx_queue[q]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 790 | bdp = rxq->bd.base; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 791 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 792 | for (i = 0; i < rxq->bd.ring_size; i++) { |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 793 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 794 | /* Initialize the BD for every fragment in the page. */ |
| 795 | if (bdp->cbd_bufaddr) |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 796 | bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 797 | else |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 798 | bdp->cbd_sc = cpu_to_fec16(0); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 799 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 800 | } |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 801 | |
| 802 | /* Set the last buffer to wrap */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 803 | bdp = fec_enet_get_prevdesc(bdp, &rxq->bd); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 804 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 805 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 806 | rxq->bd.cur = rxq->bd.base; |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 807 | } |
| 808 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 809 | for (q = 0; q < fep->num_tx_queues; q++) { |
| 810 | /* ...and the same for transmit */ |
| 811 | txq = fep->tx_queue[q]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 812 | bdp = txq->bd.base; |
| 813 | txq->bd.cur = bdp; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 814 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 815 | for (i = 0; i < txq->bd.ring_size; i++) { |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 816 | /* Initialize the BD for every fragment in the page. */ |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 817 | bdp->cbd_sc = cpu_to_fec16(0); |
Fugang Duan | 930882f | 2017-12-22 17:12:09 +0800 | [diff] [blame] | 818 | if (bdp->cbd_bufaddr && |
| 819 | !IS_TSO_HEADER(txq, fec32_to_cpu(bdp->cbd_bufaddr))) |
| 820 | dma_unmap_single(&fep->pdev->dev, |
| 821 | fec32_to_cpu(bdp->cbd_bufaddr), |
| 822 | fec16_to_cpu(bdp->cbd_datlen), |
| 823 | DMA_TO_DEVICE); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 824 | if (txq->tx_skbuff[i]) { |
| 825 | dev_kfree_skb_any(txq->tx_skbuff[i]); |
| 826 | txq->tx_skbuff[i] = NULL; |
| 827 | } |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 828 | bdp->cbd_bufaddr = cpu_to_fec32(0); |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 829 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | /* Set the last buffer to wrap */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 833 | bdp = fec_enet_get_prevdesc(bdp, &txq->bd); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 834 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 835 | txq->dirty_tx = bdp; |
| 836 | } |
| 837 | } |
| 838 | |
Frank Li | ce99d0d | 2014-09-13 05:00:52 +0800 | [diff] [blame] | 839 | static void fec_enet_active_rxring(struct net_device *ndev) |
| 840 | { |
| 841 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 842 | int i; |
| 843 | |
| 844 | for (i = 0; i < fep->num_rx_queues; i++) |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 845 | writel(0, fep->rx_queue[i]->bd.reg_desc_active); |
Frank Li | ce99d0d | 2014-09-13 05:00:52 +0800 | [diff] [blame] | 846 | } |
| 847 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 848 | static void fec_enet_enable_ring(struct net_device *ndev) |
| 849 | { |
| 850 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 851 | struct fec_enet_priv_tx_q *txq; |
| 852 | struct fec_enet_priv_rx_q *rxq; |
| 853 | int i; |
| 854 | |
| 855 | for (i = 0; i < fep->num_rx_queues; i++) { |
| 856 | rxq = fep->rx_queue[i]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 857 | writel(rxq->bd.dma, fep->hwp + FEC_R_DES_START(i)); |
Andrew Lunn | 8c38f31 | 2017-07-30 19:36:05 +0200 | [diff] [blame] | 858 | writel(PKT_MAXBUF_SIZE, fep->hwp + FEC_R_BUFF_SIZE(i)); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 859 | |
| 860 | /* enable DMA1/2 */ |
| 861 | if (i) |
| 862 | writel(RCMR_MATCHEN | RCMR_CMP(i), |
| 863 | fep->hwp + FEC_RCMR(i)); |
| 864 | } |
| 865 | |
| 866 | for (i = 0; i < fep->num_tx_queues; i++) { |
| 867 | txq = fep->tx_queue[i]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 868 | writel(txq->bd.dma, fep->hwp + FEC_X_DES_START(i)); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 869 | |
| 870 | /* enable DMA1/2 */ |
| 871 | if (i) |
| 872 | writel(DMA_CLASS_EN | IDLE_SLOPE(i), |
| 873 | fep->hwp + FEC_DMA_CFG(i)); |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | static void fec_enet_reset_skb(struct net_device *ndev) |
| 878 | { |
| 879 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 880 | struct fec_enet_priv_tx_q *txq; |
| 881 | int i, j; |
| 882 | |
| 883 | for (i = 0; i < fep->num_tx_queues; i++) { |
| 884 | txq = fep->tx_queue[i]; |
| 885 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 886 | for (j = 0; j < txq->bd.ring_size; j++) { |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 887 | if (txq->tx_skbuff[j]) { |
| 888 | dev_kfree_skb_any(txq->tx_skbuff[j]); |
| 889 | txq->tx_skbuff[j] = NULL; |
| 890 | } |
| 891 | } |
| 892 | } |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 893 | } |
| 894 | |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 895 | /* |
| 896 | * This function is called to start or restart the FEC during a link |
| 897 | * change, transmit timeout, or to reconfigure the FEC. The network |
| 898 | * packet processing for this device must be stopped before this call. |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 899 | */ |
| 900 | static void |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 901 | fec_restart(struct net_device *ndev) |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 902 | { |
| 903 | struct fec_enet_private *fep = netdev_priv(ndev); |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 904 | u32 val; |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 905 | u32 temp_mac[2]; |
| 906 | u32 rcntl = OPT_FRAME_SIZE | 0x04; |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 907 | u32 ecntl = 0x2; /* ETHEREN */ |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 908 | |
Fugang Duan | 106c314 | 2014-09-13 05:00:51 +0800 | [diff] [blame] | 909 | /* Whack a reset. We should wait for this. |
| 910 | * For i.MX6SX SOC, enet use AXI bus, we use disable MAC |
| 911 | * instead of reset MAC itself. |
| 912 | */ |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 913 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
Fugang Duan | 106c314 | 2014-09-13 05:00:51 +0800 | [diff] [blame] | 914 | writel(0, fep->hwp + FEC_ECNTRL); |
| 915 | } else { |
| 916 | writel(1, fep->hwp + FEC_ECNTRL); |
| 917 | udelay(10); |
| 918 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 919 | |
| 920 | /* |
| 921 | * enet-mac reset will reset mac address registers too, |
| 922 | * so need to reconfigure it. |
| 923 | */ |
Gavin Schenk | b82d44d | 2016-09-30 11:46:10 +0200 | [diff] [blame] | 924 | memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN); |
| 925 | writel((__force u32)cpu_to_be32(temp_mac[0]), |
| 926 | fep->hwp + FEC_ADDR_LOW); |
| 927 | writel((__force u32)cpu_to_be32(temp_mac[1]), |
| 928 | fep->hwp + FEC_ADDR_HIGH); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 929 | |
| 930 | /* Clear any outstanding interrupt. */ |
Nimrod Andy | e17f7fe | 2014-12-11 09:20:32 +0800 | [diff] [blame] | 931 | writel(0xffffffff, fep->hwp + FEC_IEVENT); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 932 | |
Frank Li | 14109a5 | 2013-03-26 16:12:03 +0000 | [diff] [blame] | 933 | fec_enet_bd_init(ndev); |
| 934 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 935 | fec_enet_enable_ring(ndev); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 936 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 937 | /* Reset tx SKB buffers. */ |
| 938 | fec_enet_reset_skb(ndev); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 939 | |
| 940 | /* Enable MII mode */ |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 941 | if (fep->full_duplex == DUPLEX_FULL) { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 942 | /* FD enable */ |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 943 | writel(0x04, fep->hwp + FEC_X_CNTRL); |
| 944 | } else { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 945 | /* No Rcv on Xmit */ |
| 946 | rcntl |= 0x02; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 947 | writel(0x0, fep->hwp + FEC_X_CNTRL); |
| 948 | } |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 949 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 950 | /* Set MII speed */ |
| 951 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 952 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 953 | #if !defined(CONFIG_M5272) |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 954 | if (fep->quirks & FEC_QUIRK_HAS_RACC) { |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 955 | val = readl(fep->hwp + FEC_RACC); |
Eric Nelson | 3ac72b7 | 2016-09-24 07:42:19 -0700 | [diff] [blame] | 956 | /* align IP header */ |
| 957 | val |= FEC_RACC_SHIFT16; |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 958 | if (fep->csum_flags & FLAG_RX_CSUM_ENABLED) |
Eric Nelson | 3ac72b7 | 2016-09-24 07:42:19 -0700 | [diff] [blame] | 959 | /* set RX checksum */ |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 960 | val |= FEC_RACC_OPTIONS; |
| 961 | else |
| 962 | val &= ~FEC_RACC_OPTIONS; |
| 963 | writel(val, fep->hwp + FEC_RACC); |
Fabio Estevam | 32867fc | 2016-03-31 12:05:17 -0300 | [diff] [blame] | 964 | writel(PKT_MAXBUF_SIZE, fep->hwp + FEC_FTRL); |
Greg Ungerer | 1880349 | 2015-06-20 15:51:57 +1000 | [diff] [blame] | 965 | } |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 966 | #endif |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 967 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 968 | /* |
| 969 | * The phy interface and speed need to get configured |
| 970 | * differently on enet-mac. |
| 971 | */ |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 972 | if (fep->quirks & FEC_QUIRK_ENET_MAC) { |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 973 | /* Enable flow control and length check */ |
| 974 | rcntl |= 0x40000000 | 0x00000020; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 975 | |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 976 | /* RGMII, RMII or MII */ |
Markus Pargmann | e813bb2 | 2015-04-30 17:07:50 +0200 | [diff] [blame] | 977 | if (fep->phy_interface == PHY_INTERFACE_MODE_RGMII || |
| 978 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_ID || |
| 979 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID || |
| 980 | fep->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 981 | rcntl |= (1 << 6); |
| 982 | else if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 983 | rcntl |= (1 << 8); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 984 | else |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 985 | rcntl &= ~(1 << 8); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 986 | |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 987 | /* 1G, 100M or 10M */ |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 988 | if (ndev->phydev) { |
| 989 | if (ndev->phydev->speed == SPEED_1000) |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 990 | ecntl |= (1 << 5); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 991 | else if (ndev->phydev->speed == SPEED_100) |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 992 | rcntl &= ~(1 << 9); |
| 993 | else |
| 994 | rcntl |= (1 << 9); |
| 995 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 996 | } else { |
| 997 | #ifdef FEC_MIIGSK_ENR |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 998 | if (fep->quirks & FEC_QUIRK_USE_GASKET) { |
Eric Benard | 8d82f21 | 2012-01-12 06:10:28 +0000 | [diff] [blame] | 999 | u32 cfgr; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1000 | /* disable the gasket and wait */ |
| 1001 | writel(0, fep->hwp + FEC_MIIGSK_ENR); |
| 1002 | while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4) |
| 1003 | udelay(1); |
| 1004 | |
| 1005 | /* |
| 1006 | * configure the gasket: |
| 1007 | * RMII, 50 MHz, no loopback, no echo |
Shawn Guo | 0ca1e29 | 2011-07-01 18:11:22 +0800 | [diff] [blame] | 1008 | * MII, 25 MHz, no loopback, no echo |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1009 | */ |
Eric Benard | 8d82f21 | 2012-01-12 06:10:28 +0000 | [diff] [blame] | 1010 | cfgr = (fep->phy_interface == PHY_INTERFACE_MODE_RMII) |
| 1011 | ? BM_MIIGSK_CFGR_RMII : BM_MIIGSK_CFGR_MII; |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 1012 | if (ndev->phydev && ndev->phydev->speed == SPEED_10) |
Eric Benard | 8d82f21 | 2012-01-12 06:10:28 +0000 | [diff] [blame] | 1013 | cfgr |= BM_MIIGSK_CFGR_FRCONT_10M; |
| 1014 | writel(cfgr, fep->hwp + FEC_MIIGSK_CFGR); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1015 | |
| 1016 | /* re-enable the gasket */ |
| 1017 | writel(2, fep->hwp + FEC_MIIGSK_ENR); |
| 1018 | } |
| 1019 | #endif |
| 1020 | } |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1021 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1022 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1023 | /* enable pause frame*/ |
| 1024 | if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) || |
| 1025 | ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) && |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 1026 | ndev->phydev && ndev->phydev->pause)) { |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1027 | rcntl |= FEC_ENET_FCE; |
| 1028 | |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 1029 | /* set FIFO threshold parameter to reduce overrun */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1030 | writel(FEC_ENET_RSEM_V, fep->hwp + FEC_R_FIFO_RSEM); |
| 1031 | writel(FEC_ENET_RSFL_V, fep->hwp + FEC_R_FIFO_RSFL); |
| 1032 | writel(FEC_ENET_RAEM_V, fep->hwp + FEC_R_FIFO_RAEM); |
| 1033 | writel(FEC_ENET_RAFL_V, fep->hwp + FEC_R_FIFO_RAFL); |
| 1034 | |
| 1035 | /* OPD */ |
| 1036 | writel(FEC_ENET_OPD_V, fep->hwp + FEC_OPD); |
| 1037 | } else { |
| 1038 | rcntl &= ~FEC_ENET_FCE; |
| 1039 | } |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1040 | #endif /* !defined(CONFIG_M5272) */ |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1041 | |
Uwe Kleine-König | cd1f402 | 2011-01-25 22:11:25 +0100 | [diff] [blame] | 1042 | writel(rcntl, fep->hwp + FEC_R_CNTRL); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1043 | |
Stefan Wahren | 84fe618 | 2014-03-12 11:28:19 +0100 | [diff] [blame] | 1044 | /* Setup multicast filter. */ |
| 1045 | set_multicast_list(ndev); |
| 1046 | #ifndef CONFIG_M5272 |
| 1047 | writel(0, fep->hwp + FEC_HASH_TABLE_HIGH); |
| 1048 | writel(0, fep->hwp + FEC_HASH_TABLE_LOW); |
| 1049 | #endif |
| 1050 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 1051 | if (fep->quirks & FEC_QUIRK_ENET_MAC) { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1052 | /* enable ENET endian swap */ |
| 1053 | ecntl |= (1 << 8); |
| 1054 | /* enable ENET store and forward mode */ |
| 1055 | writel(1 << 8, fep->hwp + FEC_X_WMRK); |
| 1056 | } |
| 1057 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1058 | if (fep->bufdesc_ex) |
| 1059 | ecntl |= (1 << 4); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1060 | |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 1061 | #ifndef CONFIG_M5272 |
Jim Baxter | b9eef55 | 2013-07-01 14:57:54 +0100 | [diff] [blame] | 1062 | /* Enable the MIB statistic event counters */ |
| 1063 | writel(0 << 31, fep->hwp + FEC_MIB_CTRLSTAT); |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 1064 | #endif |
| 1065 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1066 | /* And last, enable the transmit and receive processing */ |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1067 | writel(ecntl, fep->hwp + FEC_ECNTRL); |
Frank Li | ce99d0d | 2014-09-13 05:00:52 +0800 | [diff] [blame] | 1068 | fec_enet_active_rxring(ndev); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1069 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1070 | if (fep->bufdesc_ex) |
| 1071 | fec_ptp_start_cyclecounter(ndev); |
| 1072 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1073 | /* Enable interrupts we wish to service */ |
Nimrod Andy | 0c5a3ae | 2014-12-11 09:20:33 +0800 | [diff] [blame] | 1074 | if (fep->link) |
| 1075 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
| 1076 | else |
| 1077 | writel(FEC_ENET_MII, fep->hwp + FEC_IMASK); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 1078 | |
| 1079 | /* Init the interrupt coalescing */ |
| 1080 | fec_enet_itr_coal_init(ndev); |
| 1081 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | static void |
| 1085 | fec_stop(struct net_device *ndev) |
| 1086 | { |
| 1087 | struct fec_enet_private *fep = netdev_priv(ndev); |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 1088 | struct fec_platform_data *pdata = fep->pdev->dev.platform_data; |
Lothar Waßmann | 42431dc | 2011-12-07 21:59:30 +0000 | [diff] [blame] | 1089 | u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8); |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 1090 | u32 val; |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1091 | |
| 1092 | /* We cannot expect a graceful transmit stop without link !!! */ |
| 1093 | if (fep->link) { |
| 1094 | writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */ |
| 1095 | udelay(10); |
| 1096 | if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA)) |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1097 | netdev_err(ndev, "Graceful transmit stop did not complete!\n"); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1098 | } |
| 1099 | |
Fugang Duan | 106c314 | 2014-09-13 05:00:51 +0800 | [diff] [blame] | 1100 | /* Whack a reset. We should wait for this. |
| 1101 | * For i.MX6SX SOC, enet use AXI bus, we use disable MAC |
| 1102 | * instead of reset MAC itself. |
| 1103 | */ |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 1104 | if (!(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) { |
| 1105 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
| 1106 | writel(0, fep->hwp + FEC_ECNTRL); |
| 1107 | } else { |
| 1108 | writel(1, fep->hwp + FEC_ECNTRL); |
| 1109 | udelay(10); |
| 1110 | } |
| 1111 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
Fugang Duan | 106c314 | 2014-09-13 05:00:51 +0800 | [diff] [blame] | 1112 | } else { |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 1113 | writel(FEC_DEFAULT_IMASK | FEC_ENET_WAKEUP, fep->hwp + FEC_IMASK); |
| 1114 | val = readl(fep->hwp + FEC_ECNTRL); |
| 1115 | val |= (FEC_ECR_MAGICEN | FEC_ECR_SLEEP); |
| 1116 | writel(val, fep->hwp + FEC_ECNTRL); |
| 1117 | |
| 1118 | if (pdata && pdata->sleep_mode_enable) |
| 1119 | pdata->sleep_mode_enable(true); |
Fugang Duan | 106c314 | 2014-09-13 05:00:51 +0800 | [diff] [blame] | 1120 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1121 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1122 | |
| 1123 | /* We have to keep ENET enabled to have MII interrupt stay working */ |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 1124 | if (fep->quirks & FEC_QUIRK_ENET_MAC && |
| 1125 | !(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1126 | writel(2, fep->hwp + FEC_ECNTRL); |
Lothar Waßmann | 42431dc | 2011-12-07 21:59:30 +0000 | [diff] [blame] | 1127 | writel(rmii_mode, fep->hwp + FEC_R_CNTRL); |
| 1128 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1129 | } |
| 1130 | |
| 1131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | static void |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1133 | fec_timeout(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1135 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | |
Russell King | 344756f | 2014-07-08 13:01:59 +0100 | [diff] [blame] | 1137 | fec_dump(ndev); |
| 1138 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1139 | ndev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1141 | schedule_work(&fep->tx_timeout_work); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1142 | } |
| 1143 | |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1144 | static void fec_enet_timeout_work(struct work_struct *work) |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1145 | { |
| 1146 | struct fec_enet_private *fep = |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1147 | container_of(work, struct fec_enet_private, tx_timeout_work); |
Russell King | 8ce5624 | 2014-07-08 12:40:07 +0100 | [diff] [blame] | 1148 | struct net_device *ndev = fep->netdev; |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1149 | |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1150 | rtnl_lock(); |
| 1151 | if (netif_device_present(ndev) || netif_running(ndev)) { |
| 1152 | napi_disable(&fep->napi); |
| 1153 | netif_tx_lock_bh(ndev); |
| 1154 | fec_restart(ndev); |
Rickard x Andersson | 2cdc244 | 2018-10-02 14:49:32 +0200 | [diff] [blame] | 1155 | netif_tx_wake_all_queues(ndev); |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1156 | netif_tx_unlock_bh(ndev); |
| 1157 | napi_enable(&fep->napi); |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1158 | } |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 1159 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | } |
| 1161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | static void |
Russell King | bfd4ecd | 2014-07-08 13:02:09 +0100 | [diff] [blame] | 1163 | fec_enet_hwtstamp(struct fec_enet_private *fep, unsigned ts, |
| 1164 | struct skb_shared_hwtstamps *hwtstamps) |
| 1165 | { |
| 1166 | unsigned long flags; |
| 1167 | u64 ns; |
| 1168 | |
| 1169 | spin_lock_irqsave(&fep->tmreg_lock, flags); |
| 1170 | ns = timecounter_cyc2time(&fep->tc, ts); |
| 1171 | spin_unlock_irqrestore(&fep->tmreg_lock, flags); |
| 1172 | |
| 1173 | memset(hwtstamps, 0, sizeof(*hwtstamps)); |
| 1174 | hwtstamps->hwtstamp = ns_to_ktime(ns); |
| 1175 | } |
| 1176 | |
| 1177 | static void |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1178 | fec_enet_tx_queue(struct net_device *ndev, u16 queue_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | { |
| 1180 | struct fec_enet_private *fep; |
Fabio Estevam | a2fe37b | 2015-03-13 14:07:54 -0300 | [diff] [blame] | 1181 | struct bufdesc *bdp; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1182 | unsigned short status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | struct sk_buff *skb; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1184 | struct fec_enet_priv_tx_q *txq; |
| 1185 | struct netdev_queue *nq; |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1186 | int index = 0; |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 1187 | int entries_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1189 | fep = netdev_priv(ndev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1190 | |
| 1191 | queue_id = FEC_ENET_GET_QUQUE(queue_id); |
| 1192 | |
| 1193 | txq = fep->tx_queue[queue_id]; |
| 1194 | /* get next bdp of dirty_tx */ |
| 1195 | nq = netdev_get_tx_queue(ndev, queue_id); |
| 1196 | bdp = txq->dirty_tx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1198 | /* get next bdp of dirty_tx */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1199 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1200 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1201 | while (bdp != READ_ONCE(txq->bd.cur)) { |
| 1202 | /* Order the load of bd.cur and cbd_sc */ |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 1203 | rmb(); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1204 | status = fec16_to_cpu(READ_ONCE(bdp->cbd_sc)); |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 1205 | if (status & BD_ENET_TX_READY) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1206 | break; |
| 1207 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1208 | index = fec_enet_get_bd_index(bdp, &txq->bd); |
Nimrod Andy | 2b995f6 | 2015-01-20 14:10:35 +0800 | [diff] [blame] | 1209 | |
Fabio Estevam | a2fe37b | 2015-03-13 14:07:54 -0300 | [diff] [blame] | 1210 | skb = txq->tx_skbuff[index]; |
Nimrod Andy | 2b995f6 | 2015-01-20 14:10:35 +0800 | [diff] [blame] | 1211 | txq->tx_skbuff[index] = NULL; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1212 | if (!IS_TSO_HEADER(txq, fec32_to_cpu(bdp->cbd_bufaddr))) |
| 1213 | dma_unmap_single(&fep->pdev->dev, |
| 1214 | fec32_to_cpu(bdp->cbd_bufaddr), |
| 1215 | fec16_to_cpu(bdp->cbd_datlen), |
| 1216 | DMA_TO_DEVICE); |
| 1217 | bdp->cbd_bufaddr = cpu_to_fec32(0); |
Troy Kisky | 7fafe80 | 2016-05-27 13:30:40 -0700 | [diff] [blame] | 1218 | if (!skb) |
| 1219 | goto skb_done; |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | /* Check for errors. */ |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1222 | if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | BD_ENET_TX_RL | BD_ENET_TX_UN | |
| 1224 | BD_ENET_TX_CSL)) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1225 | ndev->stats.tx_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1226 | if (status & BD_ENET_TX_HB) /* No heartbeat */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1227 | ndev->stats.tx_heartbeat_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1228 | if (status & BD_ENET_TX_LC) /* Late collision */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1229 | ndev->stats.tx_window_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1230 | if (status & BD_ENET_TX_RL) /* Retrans limit */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1231 | ndev->stats.tx_aborted_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1232 | if (status & BD_ENET_TX_UN) /* Underrun */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1233 | ndev->stats.tx_fifo_errors++; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1234 | if (status & BD_ENET_TX_CSL) /* Carrier lost */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1235 | ndev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } else { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1237 | ndev->stats.tx_packets++; |
Nimrod Andy | 6e90928 | 2014-06-12 08:16:22 +0800 | [diff] [blame] | 1238 | ndev->stats.tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | } |
| 1240 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1241 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) && |
| 1242 | fep->bufdesc_ex) { |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1243 | struct skb_shared_hwtstamps shhwtstamps; |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1244 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1245 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1246 | fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), &shhwtstamps); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1247 | skb_tstamp_tx(skb, &shhwtstamps); |
| 1248 | } |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | /* Deferred means some collisions occurred during transmit, |
| 1251 | * but we eventually sent the packet OK. |
| 1252 | */ |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1253 | if (status & BD_ENET_TX_DEF) |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1254 | ndev->stats.collisions++; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1255 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1256 | /* Free the sk buffer associated with this last transmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | dev_kfree_skb_any(skb); |
Troy Kisky | 7fafe80 | 2016-05-27 13:30:40 -0700 | [diff] [blame] | 1258 | skb_done: |
Kevin Hao | c4bc44c | 2015-08-07 13:52:37 +0800 | [diff] [blame] | 1259 | /* Make sure the update to bdp and tx_skbuff are performed |
| 1260 | * before dirty_tx |
| 1261 | */ |
| 1262 | wmb(); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1263 | txq->dirty_tx = bdp; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1264 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1265 | /* Update pointer to next buffer descriptor to be transmitted */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1266 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1267 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1268 | /* 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] | 1269 | */ |
Rickard x Andersson | 2cdc244 | 2018-10-02 14:49:32 +0200 | [diff] [blame] | 1270 | if (netif_tx_queue_stopped(nq)) { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1271 | entries_free = fec_enet_get_free_txdesc_num(txq); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1272 | if (entries_free >= txq->tx_wake_threshold) |
| 1273 | netif_tx_wake_queue(nq); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 1274 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | } |
Russell King | ccea296 | 2014-07-08 13:01:38 +0100 | [diff] [blame] | 1276 | |
| 1277 | /* ERR006538: Keep the transmitter going */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1278 | if (bdp != txq->bd.cur && |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 1279 | readl(txq->bd.reg_desc_active) == 0) |
| 1280 | writel(0, txq->bd.reg_desc_active); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1281 | } |
| 1282 | |
| 1283 | static void |
| 1284 | fec_enet_tx(struct net_device *ndev) |
| 1285 | { |
| 1286 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1287 | u16 queue_id; |
| 1288 | /* First process class A queue, then Class B and Best Effort queue */ |
| 1289 | for_each_set_bit(queue_id, &fep->work_tx, FEC_ENET_MAX_TX_QS) { |
| 1290 | clear_bit(queue_id, &fep->work_tx); |
| 1291 | fec_enet_tx_queue(ndev, queue_id); |
| 1292 | } |
| 1293 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | } |
| 1295 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1296 | static int |
| 1297 | fec_enet_new_rxbdp(struct net_device *ndev, struct bufdesc *bdp, struct sk_buff *skb) |
| 1298 | { |
| 1299 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1300 | int off; |
| 1301 | |
| 1302 | off = ((unsigned long)skb->data) & fep->rx_align; |
| 1303 | if (off) |
| 1304 | skb_reserve(skb, fep->rx_align + 1 - off); |
| 1305 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1306 | bdp->cbd_bufaddr = cpu_to_fec32(dma_map_single(&fep->pdev->dev, skb->data, FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE)); |
| 1307 | if (dma_mapping_error(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr))) { |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1308 | if (net_ratelimit()) |
| 1309 | netdev_err(ndev, "Rx DMA memory map failed\n"); |
| 1310 | return -ENOMEM; |
| 1311 | } |
| 1312 | |
| 1313 | return 0; |
| 1314 | } |
| 1315 | |
| 1316 | static bool fec_enet_copybreak(struct net_device *ndev, struct sk_buff **skb, |
Lothar Waßmann | 1310b54 | 2014-11-07 10:02:47 +0100 | [diff] [blame] | 1317 | struct bufdesc *bdp, u32 length, bool swap) |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1318 | { |
| 1319 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1320 | struct sk_buff *new_skb; |
| 1321 | |
| 1322 | if (length > fep->rx_copybreak) |
| 1323 | return false; |
| 1324 | |
| 1325 | new_skb = netdev_alloc_skb(ndev, length); |
| 1326 | if (!new_skb) |
| 1327 | return false; |
| 1328 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1329 | dma_sync_single_for_cpu(&fep->pdev->dev, |
| 1330 | fec32_to_cpu(bdp->cbd_bufaddr), |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1331 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
| 1332 | DMA_FROM_DEVICE); |
Lothar Waßmann | 1310b54 | 2014-11-07 10:02:47 +0100 | [diff] [blame] | 1333 | if (!swap) |
| 1334 | memcpy(new_skb->data, (*skb)->data, length); |
| 1335 | else |
| 1336 | swap_buffer2(new_skb->data, (*skb)->data, length); |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1337 | *skb = new_skb; |
| 1338 | |
| 1339 | return true; |
| 1340 | } |
| 1341 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1342 | /* During a receive, the bd_rx.cur points to the current incoming buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | * When we update through the ring, if the next incoming buffer has |
| 1344 | * not been given to the system, we just set the empty indicator, |
| 1345 | * effectively tossing the packet. |
| 1346 | */ |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1347 | static int |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1348 | fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1350 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1351 | struct fec_enet_priv_rx_q *rxq; |
Sascha Hauer | 2e28532 | 2009-04-15 01:32:16 +0000 | [diff] [blame] | 1352 | struct bufdesc *bdp; |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1353 | unsigned short status; |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1354 | struct sk_buff *skb_new = NULL; |
| 1355 | struct sk_buff *skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | ushort pkt_len; |
| 1357 | __u8 *data; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1358 | int pkt_received = 0; |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1359 | struct bufdesc_ex *ebdp = NULL; |
| 1360 | bool vlan_packet_rcvd = false; |
| 1361 | u16 vlan_tag; |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 1362 | int index = 0; |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1363 | bool is_copybreak; |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 1364 | bool need_swap = fep->quirks & FEC_QUIRK_SWAP_FRAME; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1365 | |
Greg Ungerer | 0e702ab | 2006-06-27 13:19:33 +1000 | [diff] [blame] | 1366 | #ifdef CONFIG_M532x |
| 1367 | flush_cache_all(); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1368 | #endif |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1369 | queue_id = FEC_ENET_GET_QUQUE(queue_id); |
| 1370 | rxq = fep->rx_queue[queue_id]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | /* First, grab all of the stats for the incoming packet. |
| 1373 | * These get messed up if we get called due to a busy condition. |
| 1374 | */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1375 | bdp = rxq->bd.cur; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1377 | while (!((status = fec16_to_cpu(bdp->cbd_sc)) & BD_ENET_RX_EMPTY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1379 | if (pkt_received >= budget) |
| 1380 | break; |
| 1381 | pkt_received++; |
| 1382 | |
Russell King | ed63f1d | 2015-09-02 17:24:14 +0800 | [diff] [blame] | 1383 | writel(FEC_ENET_RXF, fep->hwp + FEC_IEVENT); |
Russell King | db3421c | 2014-07-08 13:01:49 +0100 | [diff] [blame] | 1384 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1385 | /* Check for errors. */ |
Troy Kisky | 095098e | 2016-02-05 14:52:44 -0700 | [diff] [blame] | 1386 | status ^= BD_ENET_RX_LAST; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1387 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | |
Troy Kisky | 095098e | 2016-02-05 14:52:44 -0700 | [diff] [blame] | 1388 | BD_ENET_RX_CR | BD_ENET_RX_OV | BD_ENET_RX_LAST | |
| 1389 | BD_ENET_RX_CL)) { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1390 | ndev->stats.rx_errors++; |
Troy Kisky | 095098e | 2016-02-05 14:52:44 -0700 | [diff] [blame] | 1391 | if (status & BD_ENET_RX_OV) { |
| 1392 | /* FIFO overrun */ |
| 1393 | ndev->stats.rx_fifo_errors++; |
| 1394 | goto rx_processing_done; |
| 1395 | } |
| 1396 | if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH |
| 1397 | | BD_ENET_RX_LAST)) { |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1398 | /* Frame too long or too short. */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1399 | ndev->stats.rx_length_errors++; |
Troy Kisky | 095098e | 2016-02-05 14:52:44 -0700 | [diff] [blame] | 1400 | if (status & BD_ENET_RX_LAST) |
| 1401 | netdev_err(ndev, "rcv is not +last\n"); |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1402 | } |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1403 | if (status & BD_ENET_RX_CR) /* CRC Error */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1404 | ndev->stats.rx_crc_errors++; |
Troy Kisky | 095098e | 2016-02-05 14:52:44 -0700 | [diff] [blame] | 1405 | /* Report late collisions as a frame error. */ |
| 1406 | if (status & (BD_ENET_RX_NO | BD_ENET_RX_CL)) |
| 1407 | ndev->stats.rx_frame_errors++; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1408 | goto rx_processing_done; |
| 1409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1411 | /* Process the incoming frame. */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1412 | ndev->stats.rx_packets++; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1413 | pkt_len = fec16_to_cpu(bdp->cbd_datlen); |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1414 | ndev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1416 | index = fec_enet_get_bd_index(bdp, &rxq->bd); |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1417 | skb = rxq->rx_skbuff[index]; |
Sascha Hauer | ccdc4f1 | 2009-01-28 23:03:09 +0000 | [diff] [blame] | 1418 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1419 | /* The packet length includes FCS, but we don't want to |
| 1420 | * include that when passing upstream as it messes up |
| 1421 | * bridging applications. |
| 1422 | */ |
Lothar Waßmann | 1310b54 | 2014-11-07 10:02:47 +0100 | [diff] [blame] | 1423 | is_copybreak = fec_enet_copybreak(ndev, &skb, bdp, pkt_len - 4, |
| 1424 | need_swap); |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1425 | if (!is_copybreak) { |
| 1426 | skb_new = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); |
| 1427 | if (unlikely(!skb_new)) { |
| 1428 | ndev->stats.rx_dropped++; |
| 1429 | goto rx_processing_done; |
| 1430 | } |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1431 | dma_unmap_single(&fep->pdev->dev, |
| 1432 | fec32_to_cpu(bdp->cbd_bufaddr), |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1433 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
| 1434 | DMA_FROM_DEVICE); |
| 1435 | } |
| 1436 | |
| 1437 | prefetch(skb->data - NET_IP_ALIGN); |
| 1438 | skb_put(skb, pkt_len - 4); |
| 1439 | data = skb->data; |
Eric Nelson | 3ac72b7 | 2016-09-24 07:42:19 -0700 | [diff] [blame] | 1440 | |
Fabio Estevam | 235bde1 | 2016-10-21 09:34:29 -0200 | [diff] [blame] | 1441 | if (!is_copybreak && need_swap) |
| 1442 | swap_buffer(data, pkt_len); |
| 1443 | |
Eric Nelson | 3ac72b7 | 2016-09-24 07:42:19 -0700 | [diff] [blame] | 1444 | #if !defined(CONFIG_M5272) |
| 1445 | if (fep->quirks & FEC_QUIRK_HAS_RACC) |
| 1446 | data = skb_pull_inline(skb, 2); |
| 1447 | #endif |
| 1448 | |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1449 | /* Extract the enhanced buffer descriptor */ |
| 1450 | ebdp = NULL; |
| 1451 | if (fep->bufdesc_ex) |
| 1452 | ebdp = (struct bufdesc_ex *)bdp; |
| 1453 | |
| 1454 | /* If this is a VLAN packet remove the VLAN Tag */ |
| 1455 | vlan_packet_rcvd = false; |
| 1456 | if ((ndev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1457 | fep->bufdesc_ex && |
| 1458 | (ebdp->cbd_esc & cpu_to_fec32(BD_ENET_RX_VLAN))) { |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1459 | /* Push and remove the vlan tag */ |
| 1460 | struct vlan_hdr *vlan_header = |
| 1461 | (struct vlan_hdr *) (data + ETH_HLEN); |
| 1462 | vlan_tag = ntohs(vlan_header->h_vlan_TCI); |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1463 | |
| 1464 | vlan_packet_rcvd = true; |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1465 | |
Nimrod Andy | af5cbc9 | 2015-03-10 19:09:41 +0800 | [diff] [blame] | 1466 | memmove(skb->data + VLAN_HLEN, data, ETH_ALEN * 2); |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1467 | skb_pull(skb, VLAN_HLEN); |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1468 | } |
| 1469 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1470 | skb->protocol = eth_type_trans(skb, ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1472 | /* Get receive timestamp from the skb */ |
| 1473 | if (fep->hwts_rx_en && fep->bufdesc_ex) |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1474 | fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1475 | skb_hwtstamps(skb)); |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 1476 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1477 | if (fep->bufdesc_ex && |
| 1478 | (fep->csum_flags & FLAG_RX_CSUM_ENABLED)) { |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1479 | if (!(ebdp->cbd_esc & cpu_to_fec32(FLAG_RX_CSUM_ERROR))) { |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1480 | /* don't check it */ |
| 1481 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1482 | } else { |
| 1483 | skb_checksum_none_assert(skb); |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 1484 | } |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1485 | } |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 1486 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1487 | /* Handle received VLAN packets */ |
| 1488 | if (vlan_packet_rcvd) |
| 1489 | __vlan_hwaccel_put_tag(skb, |
| 1490 | htons(ETH_P_8021Q), |
| 1491 | vlan_tag); |
| 1492 | |
| 1493 | napi_gro_receive(&fep->napi, skb); |
| 1494 | |
| 1495 | if (is_copybreak) { |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1496 | dma_sync_single_for_device(&fep->pdev->dev, |
| 1497 | fec32_to_cpu(bdp->cbd_bufaddr), |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 1498 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
| 1499 | DMA_FROM_DEVICE); |
| 1500 | } else { |
| 1501 | rxq->rx_skbuff[index] = skb_new; |
| 1502 | fec_enet_new_rxbdp(ndev, bdp, skb_new); |
| 1503 | } |
| 1504 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1505 | rx_processing_done: |
| 1506 | /* Clear the status flags for this buffer */ |
| 1507 | status &= ~BD_ENET_RX_STATS; |
| 1508 | |
| 1509 | /* Mark the buffer empty */ |
| 1510 | status |= BD_ENET_RX_EMPTY; |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1511 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1512 | if (fep->bufdesc_ex) { |
| 1513 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
| 1514 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 1515 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 1516 | ebdp->cbd_prot = 0; |
| 1517 | ebdp->cbd_bdu = 0; |
| 1518 | } |
Troy Kisky | be29346 | 2016-02-05 14:52:49 -0700 | [diff] [blame] | 1519 | /* Make sure the updates to rest of the descriptor are |
| 1520 | * performed before transferring ownership. |
| 1521 | */ |
| 1522 | wmb(); |
| 1523 | bdp->cbd_sc = cpu_to_fec16(status); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 1524 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1525 | /* Update BD pointer to next entry */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1526 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
Duan Fugang-B38611 | 36e24e2 | 2013-09-03 10:41:18 +0800 | [diff] [blame] | 1527 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 1528 | /* Doing this here will keep the FEC running while we process |
| 1529 | * incoming frames. On a heavily loaded network, we should be |
| 1530 | * able to keep up at the expense of system resources. |
| 1531 | */ |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 1532 | writel(0, rxq->bd.reg_desc_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | } |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 1534 | rxq->bd.cur = bdp; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1535 | return pkt_received; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | } |
| 1537 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1538 | static int |
| 1539 | fec_enet_rx(struct net_device *ndev, int budget) |
| 1540 | { |
| 1541 | int pkt_received = 0; |
| 1542 | u16 queue_id; |
| 1543 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1544 | |
| 1545 | for_each_set_bit(queue_id, &fep->work_rx, FEC_ENET_MAX_RX_QS) { |
Uwe Kleine-König | 1c021bb | 2016-05-03 16:38:53 +0200 | [diff] [blame] | 1546 | int ret; |
| 1547 | |
| 1548 | ret = fec_enet_rx_queue(ndev, |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1549 | budget - pkt_received, queue_id); |
Uwe Kleine-König | 1c021bb | 2016-05-03 16:38:53 +0200 | [diff] [blame] | 1550 | |
| 1551 | if (ret < budget - pkt_received) |
| 1552 | clear_bit(queue_id, &fep->work_rx); |
| 1553 | |
| 1554 | pkt_received += ret; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1555 | } |
| 1556 | return pkt_received; |
| 1557 | } |
| 1558 | |
| 1559 | static bool |
| 1560 | fec_enet_collect_events(struct fec_enet_private *fep, uint int_events) |
| 1561 | { |
| 1562 | if (int_events == 0) |
| 1563 | return false; |
| 1564 | |
| 1565 | if (int_events & FEC_ENET_RXF) |
| 1566 | fep->work_rx |= (1 << 2); |
Frank Li | ce99d0d | 2014-09-13 05:00:52 +0800 | [diff] [blame] | 1567 | if (int_events & FEC_ENET_RXF_1) |
| 1568 | fep->work_rx |= (1 << 0); |
| 1569 | if (int_events & FEC_ENET_RXF_2) |
| 1570 | fep->work_rx |= (1 << 1); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1571 | |
| 1572 | if (int_events & FEC_ENET_TXF) |
| 1573 | fep->work_tx |= (1 << 2); |
Frank Li | ce99d0d | 2014-09-13 05:00:52 +0800 | [diff] [blame] | 1574 | if (int_events & FEC_ENET_TXF_1) |
| 1575 | fep->work_tx |= (1 << 0); |
| 1576 | if (int_events & FEC_ENET_TXF_2) |
| 1577 | fep->work_tx |= (1 << 1); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1578 | |
| 1579 | return true; |
| 1580 | } |
| 1581 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1582 | static irqreturn_t |
| 1583 | fec_enet_interrupt(int irq, void *dev_id) |
| 1584 | { |
| 1585 | struct net_device *ndev = dev_id; |
| 1586 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1587 | uint int_events; |
| 1588 | irqreturn_t ret = IRQ_NONE; |
| 1589 | |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1590 | int_events = readl(fep->hwp + FEC_IEVENT); |
Nimrod Andy | 94191fd | 2014-12-16 18:25:58 +0800 | [diff] [blame] | 1591 | writel(int_events, fep->hwp + FEC_IEVENT); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 1592 | fec_enet_collect_events(fep, int_events); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1593 | |
Fugang Duan | 61615cd | 2015-03-04 07:52:11 +0800 | [diff] [blame] | 1594 | if ((fep->work_tx || fep->work_rx) && fep->link) { |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1595 | ret = IRQ_HANDLED; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1596 | |
Nimrod Andy | 94191fd | 2014-12-16 18:25:58 +0800 | [diff] [blame] | 1597 | if (napi_schedule_prep(&fep->napi)) { |
| 1598 | /* Disable the NAPI interrupts */ |
Troy Kisky | 80dc6a9 | 2016-02-05 14:52:48 -0700 | [diff] [blame] | 1599 | writel(FEC_NAPI_IMASK, fep->hwp + FEC_IMASK); |
Nimrod Andy | 94191fd | 2014-12-16 18:25:58 +0800 | [diff] [blame] | 1600 | __napi_schedule(&fep->napi); |
| 1601 | } |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1602 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1603 | |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1604 | if (int_events & FEC_ENET_MII) { |
| 1605 | ret = IRQ_HANDLED; |
| 1606 | complete(&fep->mdio_done); |
| 1607 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1608 | |
Philipp Zabel | 81f35ff | 2014-10-22 16:34:35 +0200 | [diff] [blame] | 1609 | if (fep->ptp_clock) |
| 1610 | fec_ptp_check_pps_event(fep); |
Luwei Zhou | 278d240 | 2014-10-10 13:15:30 +0800 | [diff] [blame] | 1611 | |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1612 | return ret; |
| 1613 | } |
| 1614 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1615 | static int fec_enet_rx_napi(struct napi_struct *napi, int budget) |
| 1616 | { |
| 1617 | struct net_device *ndev = napi->dev; |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1618 | struct fec_enet_private *fep = netdev_priv(ndev); |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1619 | int pkts; |
| 1620 | |
Russell King | 7a16807 | 2014-07-08 00:22:44 +0100 | [diff] [blame] | 1621 | pkts = fec_enet_rx(ndev, budget); |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1622 | |
Frank Li | de5fb0a | 2013-03-03 17:34:25 +0000 | [diff] [blame] | 1623 | fec_enet_tx(ndev); |
| 1624 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 1625 | if (pkts < budget) { |
| 1626 | napi_complete(napi); |
| 1627 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
| 1628 | } |
| 1629 | return pkts; |
| 1630 | } |
Uwe Kleine-König | 4599365 | 2011-01-19 20:47:04 +0100 | [diff] [blame] | 1631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | /* ------------------------------------------------------------------------- */ |
Fabio Estevam | 0c7768a | 2013-01-07 17:42:56 +0000 | [diff] [blame] | 1633 | static void fec_get_mac(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1635 | struct fec_enet_private *fep = netdev_priv(ndev); |
Jingoo Han | 94660ba | 2013-08-30 13:56:26 +0900 | [diff] [blame] | 1636 | struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev); |
Greg Ungerer | 7dd6a2a | 2005-09-12 11:18:10 +1000 | [diff] [blame] | 1637 | unsigned char *iap, tmpaddr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1639 | /* |
| 1640 | * try to get mac address in following order: |
| 1641 | * |
| 1642 | * 1) module parameter via kernel command line in form |
| 1643 | * fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0 |
| 1644 | */ |
| 1645 | iap = macaddr; |
| 1646 | |
| 1647 | /* |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1648 | * 2) from device tree data |
| 1649 | */ |
| 1650 | if (!is_valid_ether_addr(iap)) { |
| 1651 | struct device_node *np = fep->pdev->dev.of_node; |
| 1652 | if (np) { |
| 1653 | const char *mac = of_get_mac_address(np); |
| 1654 | if (mac) |
| 1655 | iap = (unsigned char *) mac; |
| 1656 | } |
| 1657 | } |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1658 | |
| 1659 | /* |
| 1660 | * 3) from flash or fuse (via platform data) |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1661 | */ |
| 1662 | if (!is_valid_ether_addr(iap)) { |
| 1663 | #ifdef CONFIG_M5272 |
| 1664 | if (FEC_FLASHMAC) |
| 1665 | iap = (unsigned char *)FEC_FLASHMAC; |
| 1666 | #else |
| 1667 | if (pdata) |
Lothar Waßmann | 589efdc | 2011-12-07 21:59:29 +0000 | [diff] [blame] | 1668 | iap = (unsigned char *)&pdata->mac; |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1669 | #endif |
| 1670 | } |
| 1671 | |
| 1672 | /* |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 1673 | * 4) FEC mac registers set by bootloader |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1674 | */ |
| 1675 | if (!is_valid_ether_addr(iap)) { |
Dan Carpenter | 7d7628f | 2013-08-29 11:25:14 +0300 | [diff] [blame] | 1676 | *((__be32 *) &tmpaddr[0]) = |
| 1677 | cpu_to_be32(readl(fep->hwp + FEC_ADDR_LOW)); |
| 1678 | *((__be16 *) &tmpaddr[4]) = |
| 1679 | cpu_to_be16(readl(fep->hwp + FEC_ADDR_HIGH) >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | iap = &tmpaddr[0]; |
| 1681 | } |
| 1682 | |
Lucas Stach | ff5b2fa | 2013-06-03 00:38:39 +0000 | [diff] [blame] | 1683 | /* |
| 1684 | * 5) random mac address |
| 1685 | */ |
| 1686 | if (!is_valid_ether_addr(iap)) { |
| 1687 | /* Report it and use a random ethernet address instead */ |
| 1688 | netdev_err(ndev, "Invalid MAC address: %pM\n", iap); |
| 1689 | eth_hw_addr_random(ndev); |
| 1690 | netdev_info(ndev, "Using random MAC address: %pM\n", |
| 1691 | ndev->dev_addr); |
| 1692 | return; |
| 1693 | } |
| 1694 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1695 | memcpy(ndev->dev_addr, iap, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 1697 | /* Adjust MAC if using macaddr */ |
| 1698 | if (iap == macaddr) |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 1699 | 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] | 1700 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
| 1702 | /* ------------------------------------------------------------------------- */ |
| 1703 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1704 | /* |
| 1705 | * Phy section |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1707 | static void fec_enet_adjust_link(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1709 | struct fec_enet_private *fep = netdev_priv(ndev); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 1710 | struct phy_device *phy_dev = ndev->phydev; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1711 | int status_change = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1713 | /* Prevent a state halted on mii error */ |
| 1714 | if (fep->mii_timeout && phy_dev->state == PHY_HALTED) { |
| 1715 | phy_dev->state = PHY_RESUMING; |
Frank Li | 54309fa | 2013-05-07 14:08:44 +0000 | [diff] [blame] | 1716 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1718 | |
Russell King | 8ce5624 | 2014-07-08 12:40:07 +0100 | [diff] [blame] | 1719 | /* |
| 1720 | * If the netdev is down, or is going down, we're not interested |
| 1721 | * in link state events, so just mark our idea of the link as down |
| 1722 | * and ignore the event. |
| 1723 | */ |
| 1724 | if (!netif_running(ndev) || !netif_device_present(ndev)) { |
| 1725 | fep->link = 0; |
| 1726 | } else if (phy_dev->link) { |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1727 | if (!fep->link) { |
Lothar Waßmann | 6ea0722 | 2011-12-07 21:59:27 +0000 | [diff] [blame] | 1728 | fep->link = phy_dev->link; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1729 | status_change = 1; |
| 1730 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1731 | |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 1732 | if (fep->full_duplex != phy_dev->duplex) { |
| 1733 | fep->full_duplex = phy_dev->duplex; |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1734 | status_change = 1; |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 1735 | } |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1736 | |
| 1737 | if (phy_dev->speed != fep->speed) { |
| 1738 | fep->speed = phy_dev->speed; |
| 1739 | status_change = 1; |
| 1740 | } |
| 1741 | |
| 1742 | /* if any of the above changed restart the FEC */ |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 1743 | if (status_change) { |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 1744 | napi_disable(&fep->napi); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 1745 | netif_tx_lock_bh(ndev); |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 1746 | fec_restart(ndev); |
Rickard x Andersson | 2cdc244 | 2018-10-02 14:49:32 +0200 | [diff] [blame] | 1747 | netif_tx_wake_all_queues(ndev); |
Russell King | 6af42d4 | 2014-07-08 12:40:18 +0100 | [diff] [blame] | 1748 | netif_tx_unlock_bh(ndev); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 1749 | napi_enable(&fep->napi); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 1750 | } |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1751 | } else { |
| 1752 | if (fep->link) { |
Russell King | f208ce1 | 2014-07-08 12:40:38 +0100 | [diff] [blame] | 1753 | napi_disable(&fep->napi); |
| 1754 | netif_tx_lock_bh(ndev); |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1755 | fec_stop(ndev); |
Russell King | f208ce1 | 2014-07-08 12:40:38 +0100 | [diff] [blame] | 1756 | netif_tx_unlock_bh(ndev); |
| 1757 | napi_enable(&fep->napi); |
Lucas Stach | 8d7ed0f | 2013-04-16 00:42:42 +0000 | [diff] [blame] | 1758 | fep->link = phy_dev->link; |
Lucas Stach | d97e749 | 2013-03-14 05:12:01 +0000 | [diff] [blame] | 1759 | status_change = 1; |
| 1760 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1761 | } |
| 1762 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1763 | if (status_change) |
| 1764 | phy_print_status(phy_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1765 | } |
| 1766 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1767 | 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] | 1768 | { |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1769 | struct fec_enet_private *fep = bus->priv; |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1770 | struct device *dev = &fep->pdev->dev; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1771 | unsigned long time_left; |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1772 | int ret = 0; |
| 1773 | |
| 1774 | ret = pm_runtime_get_sync(dev); |
Fabio Estevam | b0c6ce2 | 2015-08-12 12:10:23 -0300 | [diff] [blame] | 1775 | if (ret < 0) |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1776 | return ret; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1777 | |
| 1778 | fep->mii_timeout = 0; |
Russell King | aac27c7 | 2015-08-25 09:49:53 +0100 | [diff] [blame] | 1779 | reinit_completion(&fep->mdio_done); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1780 | |
| 1781 | /* start a read op */ |
| 1782 | writel(FEC_MMFR_ST | FEC_MMFR_OP_READ | |
| 1783 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | |
| 1784 | FEC_MMFR_TA, fep->hwp + FEC_MII_DATA); |
| 1785 | |
| 1786 | /* wait for end of transfer */ |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1787 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
| 1788 | usecs_to_jiffies(FEC_MII_TIMEOUT)); |
| 1789 | if (time_left == 0) { |
| 1790 | fep->mii_timeout = 1; |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1791 | netdev_err(fep->netdev, "MDIO read timeout\n"); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1792 | ret = -ETIMEDOUT; |
| 1793 | goto out; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1794 | } |
| 1795 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1796 | ret = FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA)); |
| 1797 | |
| 1798 | out: |
| 1799 | pm_runtime_mark_last_busy(dev); |
| 1800 | pm_runtime_put_autosuspend(dev); |
| 1801 | |
| 1802 | return ret; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1803 | } |
| 1804 | |
| 1805 | static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, |
| 1806 | u16 value) |
| 1807 | { |
| 1808 | struct fec_enet_private *fep = bus->priv; |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1809 | struct device *dev = &fep->pdev->dev; |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1810 | unsigned long time_left; |
Maciej S. Szmigiero | 42ea445 | 2015-09-03 21:38:30 +0200 | [diff] [blame] | 1811 | int ret; |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1812 | |
| 1813 | ret = pm_runtime_get_sync(dev); |
Fabio Estevam | b0c6ce2 | 2015-08-12 12:10:23 -0300 | [diff] [blame] | 1814 | if (ret < 0) |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1815 | return ret; |
Maciej S. Szmigiero | 42ea445 | 2015-09-03 21:38:30 +0200 | [diff] [blame] | 1816 | else |
| 1817 | ret = 0; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1818 | |
| 1819 | fep->mii_timeout = 0; |
Russell King | aac27c7 | 2015-08-25 09:49:53 +0100 | [diff] [blame] | 1820 | reinit_completion(&fep->mdio_done); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1821 | |
Shawn Guo | 862f098 | 2011-01-05 21:13:09 +0000 | [diff] [blame] | 1822 | /* start a write op */ |
| 1823 | writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1824 | FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | |
| 1825 | FEC_MMFR_TA | FEC_MMFR_DATA(value), |
| 1826 | fep->hwp + FEC_MII_DATA); |
| 1827 | |
| 1828 | /* wait for end of transfer */ |
Baruch Siach | 97b72e4 | 2010-07-11 21:12:51 +0000 | [diff] [blame] | 1829 | time_left = wait_for_completion_timeout(&fep->mdio_done, |
| 1830 | usecs_to_jiffies(FEC_MII_TIMEOUT)); |
| 1831 | if (time_left == 0) { |
| 1832 | fep->mii_timeout = 1; |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1833 | netdev_err(fep->netdev, "MDIO write timeout\n"); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1834 | ret = -ETIMEDOUT; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1835 | } |
| 1836 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 1837 | pm_runtime_mark_last_busy(dev); |
| 1838 | pm_runtime_put_autosuspend(dev); |
| 1839 | |
| 1840 | return ret; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1841 | } |
| 1842 | |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1843 | static int fec_enet_clk_enable(struct net_device *ndev, bool enable) |
| 1844 | { |
| 1845 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 1846 | int ret; |
| 1847 | |
| 1848 | if (enable) { |
| 1849 | ret = clk_prepare_enable(fep->clk_ahb); |
| 1850 | if (ret) |
| 1851 | return ret; |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1852 | if (fep->clk_enet_out) { |
| 1853 | ret = clk_prepare_enable(fep->clk_enet_out); |
| 1854 | if (ret) |
| 1855 | goto failed_clk_enet_out; |
| 1856 | } |
| 1857 | if (fep->clk_ptp) { |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 1858 | mutex_lock(&fep->ptp_clk_mutex); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1859 | ret = clk_prepare_enable(fep->clk_ptp); |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 1860 | if (ret) { |
| 1861 | mutex_unlock(&fep->ptp_clk_mutex); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1862 | goto failed_clk_ptp; |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 1863 | } else { |
| 1864 | fep->ptp_clk_on = true; |
| 1865 | } |
| 1866 | mutex_unlock(&fep->ptp_clk_mutex); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1867 | } |
Fugang Duan | 9b5330e | 2014-09-13 05:00:46 +0800 | [diff] [blame] | 1868 | if (fep->clk_ref) { |
| 1869 | ret = clk_prepare_enable(fep->clk_ref); |
| 1870 | if (ret) |
| 1871 | goto failed_clk_ref; |
| 1872 | } |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1873 | } else { |
| 1874 | clk_disable_unprepare(fep->clk_ahb); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1875 | if (fep->clk_enet_out) |
| 1876 | clk_disable_unprepare(fep->clk_enet_out); |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 1877 | if (fep->clk_ptp) { |
| 1878 | mutex_lock(&fep->ptp_clk_mutex); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1879 | clk_disable_unprepare(fep->clk_ptp); |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 1880 | fep->ptp_clk_on = false; |
| 1881 | mutex_unlock(&fep->ptp_clk_mutex); |
| 1882 | } |
Fugang Duan | 9b5330e | 2014-09-13 05:00:46 +0800 | [diff] [blame] | 1883 | if (fep->clk_ref) |
| 1884 | clk_disable_unprepare(fep->clk_ref); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1885 | } |
| 1886 | |
| 1887 | return 0; |
Fugang Duan | 9b5330e | 2014-09-13 05:00:46 +0800 | [diff] [blame] | 1888 | |
| 1889 | failed_clk_ref: |
| 1890 | if (fep->clk_ref) |
| 1891 | clk_disable_unprepare(fep->clk_ref); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1892 | failed_clk_ptp: |
| 1893 | if (fep->clk_enet_out) |
| 1894 | clk_disable_unprepare(fep->clk_enet_out); |
| 1895 | failed_clk_enet_out: |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 1896 | clk_disable_unprepare(fep->clk_ahb); |
| 1897 | |
| 1898 | return ret; |
| 1899 | } |
| 1900 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1901 | static int fec_enet_mii_probe(struct net_device *ndev) |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1902 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1903 | struct fec_enet_private *fep = netdev_priv(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1904 | struct phy_device *phy_dev = NULL; |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1905 | char mdio_bus_id[MII_BUS_ID_SIZE]; |
| 1906 | char phy_name[MII_BUS_ID_SIZE + 3]; |
| 1907 | int phy_id; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 1908 | int dev_id = fep->dev_id; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1909 | |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1910 | if (fep->phy_node) { |
| 1911 | phy_dev = of_phy_connect(ndev, fep->phy_node, |
| 1912 | &fec_enet_adjust_link, 0, |
| 1913 | fep->phy_interface); |
Nimrod Andy | 213a992 | 2014-12-09 18:46:56 +0800 | [diff] [blame] | 1914 | if (!phy_dev) |
| 1915 | return -ENODEV; |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1916 | } else { |
| 1917 | /* check for attached phy */ |
| 1918 | for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) { |
Andrew Lunn | 7f85442 | 2016-01-06 20:11:18 +0100 | [diff] [blame] | 1919 | if (!mdiobus_is_registered_device(fep->mii_bus, phy_id)) |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1920 | continue; |
| 1921 | if (dev_id--) |
| 1922 | continue; |
Rickard Strandqvist | 949bdd2 | 2014-09-14 19:32:42 +0200 | [diff] [blame] | 1923 | strlcpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE); |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1924 | break; |
| 1925 | } |
| 1926 | |
| 1927 | if (phy_id >= PHY_MAX_ADDR) { |
| 1928 | netdev_info(ndev, "no PHY, assuming direct connection to switch\n"); |
Rickard Strandqvist | 949bdd2 | 2014-09-14 19:32:42 +0200 | [diff] [blame] | 1929 | strlcpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE); |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1930 | phy_id = 0; |
| 1931 | } |
| 1932 | |
| 1933 | snprintf(phy_name, sizeof(phy_name), |
| 1934 | PHY_ID_FMT, mdio_bus_id, phy_id); |
| 1935 | phy_dev = phy_connect(ndev, phy_name, &fec_enet_adjust_link, |
| 1936 | fep->phy_interface); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1937 | } |
| 1938 | |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1939 | if (IS_ERR(phy_dev)) { |
Joe Perches | 31b7720 | 2013-04-13 19:03:17 +0000 | [diff] [blame] | 1940 | netdev_err(ndev, "could not attach to PHY\n"); |
Greg Ungerer | 6fcc040 | 2010-10-11 21:03:05 +0000 | [diff] [blame] | 1941 | return PTR_ERR(phy_dev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1942 | } |
| 1943 | |
| 1944 | /* mask with MAC supported features */ |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 1945 | if (fep->quirks & FEC_QUIRK_HAS_GBIT) { |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1946 | phy_dev->supported &= PHY_GBIT_FEATURES; |
Russell King | b44592f | 2014-07-08 00:22:34 +0100 | [diff] [blame] | 1947 | phy_dev->supported &= ~SUPPORTED_1000baseT_Half; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1948 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1949 | phy_dev->supported |= SUPPORTED_Pause; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 1950 | #endif |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 1951 | } |
Shawn Guo | 230dec6 | 2011-09-23 02:12:48 +0000 | [diff] [blame] | 1952 | else |
| 1953 | phy_dev->supported &= PHY_BASIC_FEATURES; |
| 1954 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1955 | phy_dev->advertising = phy_dev->supported; |
| 1956 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1957 | fep->link = 0; |
| 1958 | fep->full_duplex = 0; |
| 1959 | |
Andrew Lunn | 2220943 | 2016-01-06 20:11:13 +0100 | [diff] [blame] | 1960 | phy_attached_info(phy_dev); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 1961 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1962 | return 0; |
| 1963 | } |
| 1964 | |
| 1965 | static int fec_enet_mii_init(struct platform_device *pdev) |
| 1966 | { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1967 | static struct mii_bus *fec0_mii_bus; |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 1968 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 1969 | struct fec_enet_private *fep = netdev_priv(ndev); |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 1970 | struct device_node *node; |
Andrew Lunn | e7f4dc3 | 2016-01-06 20:11:15 +0100 | [diff] [blame] | 1971 | int err = -ENXIO; |
Uwe Kleine-König | 63c6073 | 2015-03-27 11:08:32 +0100 | [diff] [blame] | 1972 | u32 mii_speed, holdtime; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 1973 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1974 | /* |
Stefan Agner | 3d125f9 | 2015-01-14 00:20:21 +0100 | [diff] [blame] | 1975 | * The i.MX28 dual fec interfaces are not equal. |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1976 | * Here are the differences: |
| 1977 | * |
| 1978 | * - fec0 supports MII & RMII modes while fec1 only supports RMII |
| 1979 | * - fec0 acts as the 1588 time master while fec1 is slave |
| 1980 | * - external phys can only be configured by fec0 |
| 1981 | * |
| 1982 | * That is to say fec1 can not work independently. It only works |
| 1983 | * when fec0 is working. The reason behind this design is that the |
| 1984 | * second interface is added primarily for Switch mode. |
| 1985 | * |
| 1986 | * Because of the last point above, both phys are attached on fec0 |
| 1987 | * mdio interface in board design, and need to be configured by |
| 1988 | * fec0 mii_bus. |
| 1989 | */ |
Stefan Agner | 3d125f9 | 2015-01-14 00:20:21 +0100 | [diff] [blame] | 1990 | if ((fep->quirks & FEC_QUIRK_SINGLE_MDIO) && fep->dev_id > 0) { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1991 | /* fec1 uses fec0 mii_bus */ |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 1992 | if (mii_cnt && fec0_mii_bus) { |
| 1993 | fep->mii_bus = fec0_mii_bus; |
| 1994 | mii_cnt++; |
| 1995 | return 0; |
| 1996 | } |
| 1997 | return -ENOENT; |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 1998 | } |
| 1999 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2000 | fep->mii_timeout = 0; |
| 2001 | |
| 2002 | /* |
| 2003 | * 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] | 2004 | * |
| 2005 | * The formula for FEC MDC is 'ref_freq / (MII_SPEED x 2)' while |
| 2006 | * for ENET-MAC is 'ref_freq / ((MII_SPEED + 1) x 2)'. The i.MX28 |
| 2007 | * Reference Manual has an error on this, and gets fixed on i.MX6Q |
| 2008 | * document. |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2009 | */ |
Uwe Kleine-König | 63c6073 | 2015-03-27 11:08:32 +0100 | [diff] [blame] | 2010 | mii_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ipg), 5000000); |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 2011 | if (fep->quirks & FEC_QUIRK_ENET_MAC) |
Uwe Kleine-König | 63c6073 | 2015-03-27 11:08:32 +0100 | [diff] [blame] | 2012 | mii_speed--; |
| 2013 | if (mii_speed > 63) { |
| 2014 | dev_err(&pdev->dev, |
| 2015 | "fec clock (%lu) to fast to get right mii speed\n", |
| 2016 | clk_get_rate(fep->clk_ipg)); |
| 2017 | err = -EINVAL; |
| 2018 | goto err_out; |
| 2019 | } |
| 2020 | |
| 2021 | /* |
| 2022 | * The i.MX28 and i.MX6 types have another filed in the MSCR (aka |
| 2023 | * MII_SPEED) register that defines the MDIO output hold time. Earlier |
| 2024 | * versions are RAZ there, so just ignore the difference and write the |
| 2025 | * register always. |
| 2026 | * The minimal hold time according to IEE802.3 (clause 22) is 10 ns. |
| 2027 | * HOLDTIME + 1 is the number of clk cycles the fec is holding the |
| 2028 | * output. |
| 2029 | * The HOLDTIME bitfield takes values between 0 and 7 (inclusive). |
| 2030 | * Given that ceil(clkrate / 5000000) <= 64, the calculation for |
| 2031 | * holdtime cannot result in a value greater than 3. |
| 2032 | */ |
| 2033 | holdtime = DIV_ROUND_UP(clk_get_rate(fep->clk_ipg), 100000000) - 1; |
| 2034 | |
| 2035 | fep->phy_speed = mii_speed << 1 | holdtime << 8; |
| 2036 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2037 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 2038 | |
| 2039 | fep->mii_bus = mdiobus_alloc(); |
| 2040 | if (fep->mii_bus == NULL) { |
| 2041 | err = -ENOMEM; |
| 2042 | goto err_out; |
| 2043 | } |
| 2044 | |
| 2045 | fep->mii_bus->name = "fec_enet_mii_bus"; |
| 2046 | fep->mii_bus->read = fec_enet_mdio_read; |
| 2047 | fep->mii_bus->write = fec_enet_mdio_write; |
Florian Fainelli | 391420f | 2012-01-09 23:59:13 +0000 | [diff] [blame] | 2048 | snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", |
| 2049 | pdev->name, fep->dev_id + 1); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2050 | fep->mii_bus->priv = fep; |
| 2051 | fep->mii_bus->parent = &pdev->dev; |
| 2052 | |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 2053 | node = of_get_child_by_name(pdev->dev.of_node, "mdio"); |
| 2054 | if (node) { |
| 2055 | err = of_mdiobus_register(fep->mii_bus, node); |
| 2056 | of_node_put(node); |
| 2057 | } else { |
| 2058 | err = mdiobus_register(fep->mii_bus); |
| 2059 | } |
| 2060 | |
| 2061 | if (err) |
Andrew Lunn | e7f4dc3 | 2016-01-06 20:11:15 +0100 | [diff] [blame] | 2062 | goto err_out_free_mdiobus; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2063 | |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 2064 | mii_cnt++; |
| 2065 | |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 2066 | /* save fec0 mii_bus */ |
Stefan Agner | 3d125f9 | 2015-01-14 00:20:21 +0100 | [diff] [blame] | 2067 | if (fep->quirks & FEC_QUIRK_SINGLE_MDIO) |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 2068 | fec0_mii_bus = fep->mii_bus; |
| 2069 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2070 | return 0; |
| 2071 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2072 | err_out_free_mdiobus: |
| 2073 | mdiobus_free(fep->mii_bus); |
| 2074 | err_out: |
| 2075 | return err; |
| 2076 | } |
| 2077 | |
| 2078 | static void fec_enet_mii_remove(struct fec_enet_private *fep) |
| 2079 | { |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 2080 | if (--mii_cnt == 0) { |
| 2081 | mdiobus_unregister(fep->mii_bus); |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 2082 | mdiobus_free(fep->mii_bus); |
| 2083 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2084 | } |
| 2085 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2086 | static void fec_enet_get_drvinfo(struct net_device *ndev, |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2087 | struct ethtool_drvinfo *info) |
| 2088 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2089 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 2091 | strlcpy(info->driver, fep->pdev->dev.driver->name, |
| 2092 | sizeof(info->driver)); |
| 2093 | strlcpy(info->version, "Revision: 1.0", sizeof(info->version)); |
| 2094 | strlcpy(info->bus_info, dev_name(&ndev->dev), sizeof(info->bus_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | } |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2096 | |
Philippe Reynes | db65f35 | 2015-05-11 00:01:42 +0200 | [diff] [blame] | 2097 | static int fec_enet_get_regs_len(struct net_device *ndev) |
| 2098 | { |
| 2099 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2100 | struct resource *r; |
| 2101 | int s = 0; |
| 2102 | |
| 2103 | r = platform_get_resource(fep->pdev, IORESOURCE_MEM, 0); |
| 2104 | if (r) |
| 2105 | s = resource_size(r); |
| 2106 | |
| 2107 | return s; |
| 2108 | } |
| 2109 | |
| 2110 | /* List of registers that can be safety be read to dump them with ethtool */ |
| 2111 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ |
Johannes Berg | 05f3b50 | 2016-01-25 11:40:50 +0100 | [diff] [blame] | 2112 | defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) |
Philippe Reynes | db65f35 | 2015-05-11 00:01:42 +0200 | [diff] [blame] | 2113 | static u32 fec_enet_register_offset[] = { |
| 2114 | FEC_IEVENT, FEC_IMASK, FEC_R_DES_ACTIVE_0, FEC_X_DES_ACTIVE_0, |
| 2115 | FEC_ECNTRL, FEC_MII_DATA, FEC_MII_SPEED, FEC_MIB_CTRLSTAT, FEC_R_CNTRL, |
| 2116 | FEC_X_CNTRL, FEC_ADDR_LOW, FEC_ADDR_HIGH, FEC_OPD, FEC_TXIC0, FEC_TXIC1, |
| 2117 | FEC_TXIC2, FEC_RXIC0, FEC_RXIC1, FEC_RXIC2, FEC_HASH_TABLE_HIGH, |
| 2118 | FEC_HASH_TABLE_LOW, FEC_GRP_HASH_TABLE_HIGH, FEC_GRP_HASH_TABLE_LOW, |
| 2119 | FEC_X_WMRK, FEC_R_BOUND, FEC_R_FSTART, FEC_R_DES_START_1, |
| 2120 | FEC_X_DES_START_1, FEC_R_BUFF_SIZE_1, FEC_R_DES_START_2, |
| 2121 | FEC_X_DES_START_2, FEC_R_BUFF_SIZE_2, FEC_R_DES_START_0, |
| 2122 | FEC_X_DES_START_0, FEC_R_BUFF_SIZE_0, FEC_R_FIFO_RSFL, FEC_R_FIFO_RSEM, |
| 2123 | FEC_R_FIFO_RAEM, FEC_R_FIFO_RAFL, FEC_RACC, FEC_RCMR_1, FEC_RCMR_2, |
| 2124 | FEC_DMA_CFG_1, FEC_DMA_CFG_2, FEC_R_DES_ACTIVE_1, FEC_X_DES_ACTIVE_1, |
| 2125 | FEC_R_DES_ACTIVE_2, FEC_X_DES_ACTIVE_2, FEC_QOS_SCHEME, |
| 2126 | RMON_T_DROP, RMON_T_PACKETS, RMON_T_BC_PKT, RMON_T_MC_PKT, |
| 2127 | RMON_T_CRC_ALIGN, RMON_T_UNDERSIZE, RMON_T_OVERSIZE, RMON_T_FRAG, |
| 2128 | RMON_T_JAB, RMON_T_COL, RMON_T_P64, RMON_T_P65TO127, RMON_T_P128TO255, |
| 2129 | RMON_T_P256TO511, RMON_T_P512TO1023, RMON_T_P1024TO2047, |
| 2130 | RMON_T_P_GTE2048, RMON_T_OCTETS, |
| 2131 | IEEE_T_DROP, IEEE_T_FRAME_OK, IEEE_T_1COL, IEEE_T_MCOL, IEEE_T_DEF, |
| 2132 | IEEE_T_LCOL, IEEE_T_EXCOL, IEEE_T_MACERR, IEEE_T_CSERR, IEEE_T_SQE, |
| 2133 | IEEE_T_FDXFC, IEEE_T_OCTETS_OK, |
| 2134 | RMON_R_PACKETS, RMON_R_BC_PKT, RMON_R_MC_PKT, RMON_R_CRC_ALIGN, |
| 2135 | RMON_R_UNDERSIZE, RMON_R_OVERSIZE, RMON_R_FRAG, RMON_R_JAB, |
| 2136 | RMON_R_RESVD_O, RMON_R_P64, RMON_R_P65TO127, RMON_R_P128TO255, |
| 2137 | RMON_R_P256TO511, RMON_R_P512TO1023, RMON_R_P1024TO2047, |
| 2138 | RMON_R_P_GTE2048, RMON_R_OCTETS, |
| 2139 | IEEE_R_DROP, IEEE_R_FRAME_OK, IEEE_R_CRC, IEEE_R_ALIGN, IEEE_R_MACERR, |
| 2140 | IEEE_R_FDXFC, IEEE_R_OCTETS_OK |
| 2141 | }; |
| 2142 | #else |
| 2143 | static u32 fec_enet_register_offset[] = { |
| 2144 | FEC_ECNTRL, FEC_IEVENT, FEC_IMASK, FEC_IVEC, FEC_R_DES_ACTIVE_0, |
| 2145 | FEC_R_DES_ACTIVE_1, FEC_R_DES_ACTIVE_2, FEC_X_DES_ACTIVE_0, |
| 2146 | FEC_X_DES_ACTIVE_1, FEC_X_DES_ACTIVE_2, FEC_MII_DATA, FEC_MII_SPEED, |
| 2147 | FEC_R_BOUND, FEC_R_FSTART, FEC_X_WMRK, FEC_X_FSTART, FEC_R_CNTRL, |
| 2148 | FEC_MAX_FRM_LEN, FEC_X_CNTRL, FEC_ADDR_LOW, FEC_ADDR_HIGH, |
| 2149 | FEC_GRP_HASH_TABLE_HIGH, FEC_GRP_HASH_TABLE_LOW, FEC_R_DES_START_0, |
| 2150 | FEC_R_DES_START_1, FEC_R_DES_START_2, FEC_X_DES_START_0, |
| 2151 | FEC_X_DES_START_1, FEC_X_DES_START_2, FEC_R_BUFF_SIZE_0, |
| 2152 | FEC_R_BUFF_SIZE_1, FEC_R_BUFF_SIZE_2 |
| 2153 | }; |
| 2154 | #endif |
| 2155 | |
| 2156 | static void fec_enet_get_regs(struct net_device *ndev, |
| 2157 | struct ethtool_regs *regs, void *regbuf) |
| 2158 | { |
| 2159 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2160 | u32 __iomem *theregs = (u32 __iomem *)fep->hwp; |
| 2161 | u32 *buf = (u32 *)regbuf; |
| 2162 | u32 i, off; |
| 2163 | |
| 2164 | memset(buf, 0, regs->len); |
| 2165 | |
| 2166 | for (i = 0; i < ARRAY_SIZE(fec_enet_register_offset); i++) { |
| 2167 | off = fec_enet_register_offset[i] / 4; |
| 2168 | buf[off] = readl(&theregs[off]); |
| 2169 | } |
| 2170 | } |
| 2171 | |
Frank Li | 5ebae489 | 2013-01-06 16:25:07 +0000 | [diff] [blame] | 2172 | static int fec_enet_get_ts_info(struct net_device *ndev, |
| 2173 | struct ethtool_ts_info *info) |
| 2174 | { |
| 2175 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2176 | |
| 2177 | if (fep->bufdesc_ex) { |
| 2178 | |
| 2179 | info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | |
| 2180 | SOF_TIMESTAMPING_RX_SOFTWARE | |
| 2181 | SOF_TIMESTAMPING_SOFTWARE | |
| 2182 | SOF_TIMESTAMPING_TX_HARDWARE | |
| 2183 | SOF_TIMESTAMPING_RX_HARDWARE | |
| 2184 | SOF_TIMESTAMPING_RAW_HARDWARE; |
| 2185 | if (fep->ptp_clock) |
| 2186 | info->phc_index = ptp_clock_index(fep->ptp_clock); |
| 2187 | else |
| 2188 | info->phc_index = -1; |
| 2189 | |
| 2190 | info->tx_types = (1 << HWTSTAMP_TX_OFF) | |
| 2191 | (1 << HWTSTAMP_TX_ON); |
| 2192 | |
| 2193 | info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | |
| 2194 | (1 << HWTSTAMP_FILTER_ALL); |
| 2195 | return 0; |
| 2196 | } else { |
| 2197 | return ethtool_op_get_ts_info(ndev, info); |
| 2198 | } |
| 2199 | } |
| 2200 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 2201 | #if !defined(CONFIG_M5272) |
| 2202 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2203 | static void fec_enet_get_pauseparam(struct net_device *ndev, |
| 2204 | struct ethtool_pauseparam *pause) |
| 2205 | { |
| 2206 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2207 | |
| 2208 | pause->autoneg = (fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) != 0; |
| 2209 | pause->tx_pause = (fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) != 0; |
| 2210 | pause->rx_pause = pause->tx_pause; |
| 2211 | } |
| 2212 | |
| 2213 | static int fec_enet_set_pauseparam(struct net_device *ndev, |
| 2214 | struct ethtool_pauseparam *pause) |
| 2215 | { |
| 2216 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2217 | |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2218 | if (!ndev->phydev) |
Russell King | 0b146ca | 2014-07-08 00:22:59 +0100 | [diff] [blame] | 2219 | return -ENODEV; |
| 2220 | |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2221 | if (pause->tx_pause != pause->rx_pause) { |
| 2222 | netdev_info(ndev, |
| 2223 | "hardware only support enable/disable both tx and rx"); |
| 2224 | return -EINVAL; |
| 2225 | } |
| 2226 | |
| 2227 | fep->pause_flag = 0; |
| 2228 | |
| 2229 | /* tx pause must be same as rx pause */ |
| 2230 | fep->pause_flag |= pause->rx_pause ? FEC_PAUSE_FLAG_ENABLE : 0; |
| 2231 | fep->pause_flag |= pause->autoneg ? FEC_PAUSE_FLAG_AUTONEG : 0; |
| 2232 | |
| 2233 | if (pause->rx_pause || pause->autoneg) { |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2234 | ndev->phydev->supported |= ADVERTISED_Pause; |
| 2235 | ndev->phydev->advertising |= ADVERTISED_Pause; |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2236 | } else { |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2237 | ndev->phydev->supported &= ~ADVERTISED_Pause; |
| 2238 | ndev->phydev->advertising &= ~ADVERTISED_Pause; |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2239 | } |
| 2240 | |
| 2241 | if (pause->autoneg) { |
| 2242 | if (netif_running(ndev)) |
| 2243 | fec_stop(ndev); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2244 | phy_start_aneg(ndev->phydev); |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2245 | } |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 2246 | if (netif_running(ndev)) { |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 2247 | napi_disable(&fep->napi); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 2248 | netif_tx_lock_bh(ndev); |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 2249 | fec_restart(ndev); |
Rickard x Andersson | 2cdc244 | 2018-10-02 14:49:32 +0200 | [diff] [blame] | 2250 | netif_tx_wake_all_queues(ndev); |
Russell King | 6af42d4 | 2014-07-08 12:40:18 +0100 | [diff] [blame] | 2251 | netif_tx_unlock_bh(ndev); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 2252 | napi_enable(&fep->napi); |
Russell King | dbc64a8 | 2014-07-08 12:40:12 +0100 | [diff] [blame] | 2253 | } |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 2254 | |
| 2255 | return 0; |
| 2256 | } |
| 2257 | |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2258 | static const struct fec_stat { |
| 2259 | char name[ETH_GSTRING_LEN]; |
| 2260 | u16 offset; |
| 2261 | } fec_stats[] = { |
| 2262 | /* RMON TX */ |
| 2263 | { "tx_dropped", RMON_T_DROP }, |
| 2264 | { "tx_packets", RMON_T_PACKETS }, |
| 2265 | { "tx_broadcast", RMON_T_BC_PKT }, |
| 2266 | { "tx_multicast", RMON_T_MC_PKT }, |
| 2267 | { "tx_crc_errors", RMON_T_CRC_ALIGN }, |
| 2268 | { "tx_undersize", RMON_T_UNDERSIZE }, |
| 2269 | { "tx_oversize", RMON_T_OVERSIZE }, |
| 2270 | { "tx_fragment", RMON_T_FRAG }, |
| 2271 | { "tx_jabber", RMON_T_JAB }, |
| 2272 | { "tx_collision", RMON_T_COL }, |
| 2273 | { "tx_64byte", RMON_T_P64 }, |
| 2274 | { "tx_65to127byte", RMON_T_P65TO127 }, |
| 2275 | { "tx_128to255byte", RMON_T_P128TO255 }, |
| 2276 | { "tx_256to511byte", RMON_T_P256TO511 }, |
| 2277 | { "tx_512to1023byte", RMON_T_P512TO1023 }, |
| 2278 | { "tx_1024to2047byte", RMON_T_P1024TO2047 }, |
| 2279 | { "tx_GTE2048byte", RMON_T_P_GTE2048 }, |
| 2280 | { "tx_octets", RMON_T_OCTETS }, |
| 2281 | |
| 2282 | /* IEEE TX */ |
| 2283 | { "IEEE_tx_drop", IEEE_T_DROP }, |
| 2284 | { "IEEE_tx_frame_ok", IEEE_T_FRAME_OK }, |
| 2285 | { "IEEE_tx_1col", IEEE_T_1COL }, |
| 2286 | { "IEEE_tx_mcol", IEEE_T_MCOL }, |
| 2287 | { "IEEE_tx_def", IEEE_T_DEF }, |
| 2288 | { "IEEE_tx_lcol", IEEE_T_LCOL }, |
| 2289 | { "IEEE_tx_excol", IEEE_T_EXCOL }, |
| 2290 | { "IEEE_tx_macerr", IEEE_T_MACERR }, |
| 2291 | { "IEEE_tx_cserr", IEEE_T_CSERR }, |
| 2292 | { "IEEE_tx_sqe", IEEE_T_SQE }, |
| 2293 | { "IEEE_tx_fdxfc", IEEE_T_FDXFC }, |
| 2294 | { "IEEE_tx_octets_ok", IEEE_T_OCTETS_OK }, |
| 2295 | |
| 2296 | /* RMON RX */ |
| 2297 | { "rx_packets", RMON_R_PACKETS }, |
| 2298 | { "rx_broadcast", RMON_R_BC_PKT }, |
| 2299 | { "rx_multicast", RMON_R_MC_PKT }, |
| 2300 | { "rx_crc_errors", RMON_R_CRC_ALIGN }, |
| 2301 | { "rx_undersize", RMON_R_UNDERSIZE }, |
| 2302 | { "rx_oversize", RMON_R_OVERSIZE }, |
| 2303 | { "rx_fragment", RMON_R_FRAG }, |
| 2304 | { "rx_jabber", RMON_R_JAB }, |
| 2305 | { "rx_64byte", RMON_R_P64 }, |
| 2306 | { "rx_65to127byte", RMON_R_P65TO127 }, |
| 2307 | { "rx_128to255byte", RMON_R_P128TO255 }, |
| 2308 | { "rx_256to511byte", RMON_R_P256TO511 }, |
| 2309 | { "rx_512to1023byte", RMON_R_P512TO1023 }, |
| 2310 | { "rx_1024to2047byte", RMON_R_P1024TO2047 }, |
| 2311 | { "rx_GTE2048byte", RMON_R_P_GTE2048 }, |
| 2312 | { "rx_octets", RMON_R_OCTETS }, |
| 2313 | |
| 2314 | /* IEEE RX */ |
| 2315 | { "IEEE_rx_drop", IEEE_R_DROP }, |
| 2316 | { "IEEE_rx_frame_ok", IEEE_R_FRAME_OK }, |
| 2317 | { "IEEE_rx_crc", IEEE_R_CRC }, |
| 2318 | { "IEEE_rx_align", IEEE_R_ALIGN }, |
| 2319 | { "IEEE_rx_macerr", IEEE_R_MACERR }, |
| 2320 | { "IEEE_rx_fdxfc", IEEE_R_FDXFC }, |
| 2321 | { "IEEE_rx_octets_ok", IEEE_R_OCTETS_OK }, |
| 2322 | }; |
| 2323 | |
Nikita Yushchenko | f85de66 | 2016-12-06 09:26:53 +0300 | [diff] [blame] | 2324 | #define FEC_STATS_SIZE (ARRAY_SIZE(fec_stats) * sizeof(u64)) |
| 2325 | |
Nikita Yushchenko | 80cca77 | 2016-11-29 09:44:51 +0300 | [diff] [blame] | 2326 | static void fec_enet_update_ethtool_stats(struct net_device *dev) |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2327 | { |
| 2328 | struct fec_enet_private *fep = netdev_priv(dev); |
| 2329 | int i; |
| 2330 | |
| 2331 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) |
Nikita Yushchenko | 80cca77 | 2016-11-29 09:44:51 +0300 | [diff] [blame] | 2332 | fep->ethtool_stats[i] = readl(fep->hwp + fec_stats[i].offset); |
| 2333 | } |
| 2334 | |
| 2335 | static void fec_enet_get_ethtool_stats(struct net_device *dev, |
| 2336 | struct ethtool_stats *stats, u64 *data) |
| 2337 | { |
| 2338 | struct fec_enet_private *fep = netdev_priv(dev); |
| 2339 | |
| 2340 | if (netif_running(dev)) |
| 2341 | fec_enet_update_ethtool_stats(dev); |
| 2342 | |
Nikita Yushchenko | f85de66 | 2016-12-06 09:26:53 +0300 | [diff] [blame] | 2343 | memcpy(data, fep->ethtool_stats, FEC_STATS_SIZE); |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2344 | } |
| 2345 | |
| 2346 | static void fec_enet_get_strings(struct net_device *netdev, |
| 2347 | u32 stringset, u8 *data) |
| 2348 | { |
| 2349 | int i; |
| 2350 | switch (stringset) { |
| 2351 | case ETH_SS_STATS: |
| 2352 | for (i = 0; i < ARRAY_SIZE(fec_stats); i++) |
| 2353 | memcpy(data + i * ETH_GSTRING_LEN, |
| 2354 | fec_stats[i].name, ETH_GSTRING_LEN); |
| 2355 | break; |
| 2356 | } |
| 2357 | } |
| 2358 | |
| 2359 | static int fec_enet_get_sset_count(struct net_device *dev, int sset) |
| 2360 | { |
| 2361 | switch (sset) { |
| 2362 | case ETH_SS_STATS: |
| 2363 | return ARRAY_SIZE(fec_stats); |
| 2364 | default: |
| 2365 | return -EOPNOTSUPP; |
| 2366 | } |
| 2367 | } |
Nikita Yushchenko | f85de66 | 2016-12-06 09:26:53 +0300 | [diff] [blame] | 2368 | |
| 2369 | #else /* !defined(CONFIG_M5272) */ |
| 2370 | #define FEC_STATS_SIZE 0 |
| 2371 | static inline void fec_enet_update_ethtool_stats(struct net_device *dev) |
| 2372 | { |
| 2373 | } |
Fabio Estevam | aabd703 | 2017-06-09 22:37:22 -0300 | [diff] [blame] | 2374 | |
| 2375 | static inline void fec_enet_clear_ethtool_stats(struct net_device *dev) |
| 2376 | { |
| 2377 | } |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 2378 | #endif /* !defined(CONFIG_M5272) */ |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2379 | |
Chris Healy | 32bc9b4 | 2013-06-17 07:25:06 -0700 | [diff] [blame] | 2380 | static int fec_enet_nway_reset(struct net_device *dev) |
| 2381 | { |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2382 | struct phy_device *phydev = dev->phydev; |
Chris Healy | 32bc9b4 | 2013-06-17 07:25:06 -0700 | [diff] [blame] | 2383 | |
| 2384 | if (!phydev) |
| 2385 | return -ENODEV; |
| 2386 | |
| 2387 | return genphy_restart_aneg(phydev); |
| 2388 | } |
| 2389 | |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2390 | /* ITR clock source is enet system clock (clk_ahb). |
| 2391 | * TCTT unit is cycle_ns * 64 cycle |
| 2392 | * So, the ICTT value = X us / (cycle_ns * 64) |
| 2393 | */ |
| 2394 | static int fec_enet_us_to_itr_clock(struct net_device *ndev, int us) |
| 2395 | { |
| 2396 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2397 | |
| 2398 | return us * (fep->itr_clk_rate / 64000) / 1000; |
| 2399 | } |
| 2400 | |
| 2401 | /* Set threshold for interrupt coalescing */ |
| 2402 | static void fec_enet_itr_coal_set(struct net_device *ndev) |
| 2403 | { |
| 2404 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2405 | int rx_itr, tx_itr; |
| 2406 | |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2407 | /* Must be greater than zero to avoid unpredictable behavior */ |
| 2408 | if (!fep->rx_time_itr || !fep->rx_pkts_itr || |
| 2409 | !fep->tx_time_itr || !fep->tx_pkts_itr) |
| 2410 | return; |
| 2411 | |
| 2412 | /* Select enet system clock as Interrupt Coalescing |
| 2413 | * timer Clock Source |
| 2414 | */ |
| 2415 | rx_itr = FEC_ITR_CLK_SEL; |
| 2416 | tx_itr = FEC_ITR_CLK_SEL; |
| 2417 | |
| 2418 | /* set ICFT and ICTT */ |
| 2419 | rx_itr |= FEC_ITR_ICFT(fep->rx_pkts_itr); |
| 2420 | rx_itr |= FEC_ITR_ICTT(fec_enet_us_to_itr_clock(ndev, fep->rx_time_itr)); |
| 2421 | tx_itr |= FEC_ITR_ICFT(fep->tx_pkts_itr); |
| 2422 | tx_itr |= FEC_ITR_ICTT(fec_enet_us_to_itr_clock(ndev, fep->tx_time_itr)); |
| 2423 | |
| 2424 | rx_itr |= FEC_ITR_EN; |
| 2425 | tx_itr |= FEC_ITR_EN; |
| 2426 | |
| 2427 | writel(tx_itr, fep->hwp + FEC_TXIC0); |
| 2428 | writel(rx_itr, fep->hwp + FEC_RXIC0); |
Fugang Duan | ff7566b | 2016-06-22 18:52:35 +0800 | [diff] [blame] | 2429 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
| 2430 | writel(tx_itr, fep->hwp + FEC_TXIC1); |
| 2431 | writel(rx_itr, fep->hwp + FEC_RXIC1); |
| 2432 | writel(tx_itr, fep->hwp + FEC_TXIC2); |
| 2433 | writel(rx_itr, fep->hwp + FEC_RXIC2); |
| 2434 | } |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2435 | } |
| 2436 | |
| 2437 | static int |
| 2438 | fec_enet_get_coalesce(struct net_device *ndev, struct ethtool_coalesce *ec) |
| 2439 | { |
| 2440 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2441 | |
Fugang Duan | ff7566b | 2016-06-22 18:52:35 +0800 | [diff] [blame] | 2442 | if (!(fep->quirks & FEC_QUIRK_HAS_COALESCE)) |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2443 | return -EOPNOTSUPP; |
| 2444 | |
| 2445 | ec->rx_coalesce_usecs = fep->rx_time_itr; |
| 2446 | ec->rx_max_coalesced_frames = fep->rx_pkts_itr; |
| 2447 | |
| 2448 | ec->tx_coalesce_usecs = fep->tx_time_itr; |
| 2449 | ec->tx_max_coalesced_frames = fep->tx_pkts_itr; |
| 2450 | |
| 2451 | return 0; |
| 2452 | } |
| 2453 | |
| 2454 | static int |
| 2455 | fec_enet_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *ec) |
| 2456 | { |
| 2457 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2458 | unsigned int cycle; |
| 2459 | |
Fugang Duan | ff7566b | 2016-06-22 18:52:35 +0800 | [diff] [blame] | 2460 | if (!(fep->quirks & FEC_QUIRK_HAS_COALESCE)) |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2461 | return -EOPNOTSUPP; |
| 2462 | |
| 2463 | if (ec->rx_max_coalesced_frames > 255) { |
Colin Ian King | 9f647a6 | 2016-06-06 09:21:44 +0100 | [diff] [blame] | 2464 | pr_err("Rx coalesced frames exceed hardware limitation\n"); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2465 | return -EINVAL; |
| 2466 | } |
| 2467 | |
| 2468 | if (ec->tx_max_coalesced_frames > 255) { |
Colin Ian King | 9f647a6 | 2016-06-06 09:21:44 +0100 | [diff] [blame] | 2469 | pr_err("Tx coalesced frame exceed hardware limitation\n"); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2470 | return -EINVAL; |
| 2471 | } |
| 2472 | |
| 2473 | cycle = fec_enet_us_to_itr_clock(ndev, fep->rx_time_itr); |
| 2474 | if (cycle > 0xFFFF) { |
Colin Ian King | 9f647a6 | 2016-06-06 09:21:44 +0100 | [diff] [blame] | 2475 | pr_err("Rx coalesced usec exceed hardware limitation\n"); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2476 | return -EINVAL; |
| 2477 | } |
| 2478 | |
| 2479 | cycle = fec_enet_us_to_itr_clock(ndev, fep->tx_time_itr); |
| 2480 | if (cycle > 0xFFFF) { |
Colin Ian King | 9f647a6 | 2016-06-06 09:21:44 +0100 | [diff] [blame] | 2481 | pr_err("Rx coalesced usec exceed hardware limitation\n"); |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2482 | return -EINVAL; |
| 2483 | } |
| 2484 | |
| 2485 | fep->rx_time_itr = ec->rx_coalesce_usecs; |
| 2486 | fep->rx_pkts_itr = ec->rx_max_coalesced_frames; |
| 2487 | |
| 2488 | fep->tx_time_itr = ec->tx_coalesce_usecs; |
| 2489 | fep->tx_pkts_itr = ec->tx_max_coalesced_frames; |
| 2490 | |
| 2491 | fec_enet_itr_coal_set(ndev); |
| 2492 | |
| 2493 | return 0; |
| 2494 | } |
| 2495 | |
| 2496 | static void fec_enet_itr_coal_init(struct net_device *ndev) |
| 2497 | { |
| 2498 | struct ethtool_coalesce ec; |
| 2499 | |
| 2500 | ec.rx_coalesce_usecs = FEC_ITR_ICTT_DEFAULT; |
| 2501 | ec.rx_max_coalesced_frames = FEC_ITR_ICFT_DEFAULT; |
| 2502 | |
| 2503 | ec.tx_coalesce_usecs = FEC_ITR_ICTT_DEFAULT; |
| 2504 | ec.tx_max_coalesced_frames = FEC_ITR_ICFT_DEFAULT; |
| 2505 | |
| 2506 | fec_enet_set_coalesce(ndev, &ec); |
| 2507 | } |
| 2508 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 2509 | static int fec_enet_get_tunable(struct net_device *netdev, |
| 2510 | const struct ethtool_tunable *tuna, |
| 2511 | void *data) |
| 2512 | { |
| 2513 | struct fec_enet_private *fep = netdev_priv(netdev); |
| 2514 | int ret = 0; |
| 2515 | |
| 2516 | switch (tuna->id) { |
| 2517 | case ETHTOOL_RX_COPYBREAK: |
| 2518 | *(u32 *)data = fep->rx_copybreak; |
| 2519 | break; |
| 2520 | default: |
| 2521 | ret = -EINVAL; |
| 2522 | break; |
| 2523 | } |
| 2524 | |
| 2525 | return ret; |
| 2526 | } |
| 2527 | |
| 2528 | static int fec_enet_set_tunable(struct net_device *netdev, |
| 2529 | const struct ethtool_tunable *tuna, |
| 2530 | const void *data) |
| 2531 | { |
| 2532 | struct fec_enet_private *fep = netdev_priv(netdev); |
| 2533 | int ret = 0; |
| 2534 | |
| 2535 | switch (tuna->id) { |
| 2536 | case ETHTOOL_RX_COPYBREAK: |
| 2537 | fep->rx_copybreak = *(u32 *)data; |
| 2538 | break; |
| 2539 | default: |
| 2540 | ret = -EINVAL; |
| 2541 | break; |
| 2542 | } |
| 2543 | |
| 2544 | return ret; |
| 2545 | } |
| 2546 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 2547 | static void |
| 2548 | fec_enet_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) |
| 2549 | { |
| 2550 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2551 | |
| 2552 | if (fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET) { |
| 2553 | wol->supported = WAKE_MAGIC; |
| 2554 | wol->wolopts = fep->wol_flag & FEC_WOL_FLAG_ENABLE ? WAKE_MAGIC : 0; |
| 2555 | } else { |
| 2556 | wol->supported = wol->wolopts = 0; |
| 2557 | } |
| 2558 | } |
| 2559 | |
| 2560 | static int |
| 2561 | fec_enet_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) |
| 2562 | { |
| 2563 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2564 | |
| 2565 | if (!(fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET)) |
| 2566 | return -EINVAL; |
| 2567 | |
| 2568 | if (wol->wolopts & ~WAKE_MAGIC) |
| 2569 | return -EINVAL; |
| 2570 | |
| 2571 | device_set_wakeup_enable(&ndev->dev, wol->wolopts & WAKE_MAGIC); |
| 2572 | if (device_may_wakeup(&ndev->dev)) { |
| 2573 | fep->wol_flag |= FEC_WOL_FLAG_ENABLE; |
| 2574 | if (fep->irq[0] > 0) |
| 2575 | enable_irq_wake(fep->irq[0]); |
| 2576 | } else { |
| 2577 | fep->wol_flag &= (~FEC_WOL_FLAG_ENABLE); |
| 2578 | if (fep->irq[0] > 0) |
| 2579 | disable_irq_wake(fep->irq[0]); |
| 2580 | } |
| 2581 | |
| 2582 | return 0; |
| 2583 | } |
| 2584 | |
stephen hemminger | 9b07be4 | 2012-01-04 12:59:49 +0000 | [diff] [blame] | 2585 | static const struct ethtool_ops fec_enet_ethtool_ops = { |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2586 | .get_drvinfo = fec_enet_get_drvinfo, |
Philippe Reynes | db65f35 | 2015-05-11 00:01:42 +0200 | [diff] [blame] | 2587 | .get_regs_len = fec_enet_get_regs_len, |
| 2588 | .get_regs = fec_enet_get_regs, |
Chris Healy | 32bc9b4 | 2013-06-17 07:25:06 -0700 | [diff] [blame] | 2589 | .nway_reset = fec_enet_nway_reset, |
Russell King | c1d7c48 | 2014-07-08 13:01:54 +0100 | [diff] [blame] | 2590 | .get_link = ethtool_op_get_link, |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 2591 | .get_coalesce = fec_enet_get_coalesce, |
| 2592 | .set_coalesce = fec_enet_set_coalesce, |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2593 | #ifndef CONFIG_M5272 |
Russell King | c1d7c48 | 2014-07-08 13:01:54 +0100 | [diff] [blame] | 2594 | .get_pauseparam = fec_enet_get_pauseparam, |
| 2595 | .set_pauseparam = fec_enet_set_pauseparam, |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2596 | .get_strings = fec_enet_get_strings, |
Russell King | c1d7c48 | 2014-07-08 13:01:54 +0100 | [diff] [blame] | 2597 | .get_ethtool_stats = fec_enet_get_ethtool_stats, |
Chris Healy | 38ae92d | 2013-06-25 23:18:52 -0700 | [diff] [blame] | 2598 | .get_sset_count = fec_enet_get_sset_count, |
| 2599 | #endif |
Russell King | c1d7c48 | 2014-07-08 13:01:54 +0100 | [diff] [blame] | 2600 | .get_ts_info = fec_enet_get_ts_info, |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 2601 | .get_tunable = fec_enet_get_tunable, |
| 2602 | .set_tunable = fec_enet_set_tunable, |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 2603 | .get_wol = fec_enet_get_wol, |
| 2604 | .set_wol = fec_enet_set_wol, |
Philippe Reynes | 9365fbf | 2016-05-10 00:19:43 +0200 | [diff] [blame] | 2605 | .get_link_ksettings = phy_ethtool_get_link_ksettings, |
| 2606 | .set_link_ksettings = phy_ethtool_set_link_ksettings, |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2607 | }; |
| 2608 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2609 | 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] | 2610 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2611 | struct fec_enet_private *fep = netdev_priv(ndev); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2612 | struct phy_device *phydev = ndev->phydev; |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2613 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2614 | if (!netif_running(ndev)) |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2615 | return -EINVAL; |
| 2616 | |
| 2617 | if (!phydev) |
| 2618 | return -ENODEV; |
| 2619 | |
Ben Hutchings | 1d5244d | 2013-11-18 23:02:44 +0000 | [diff] [blame] | 2620 | if (fep->bufdesc_ex) { |
| 2621 | if (cmd == SIOCSHWTSTAMP) |
| 2622 | return fec_ptp_set(ndev, rq); |
| 2623 | if (cmd == SIOCGHWTSTAMP) |
| 2624 | return fec_ptp_get(ndev, rq); |
| 2625 | } |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2626 | |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 2627 | return phy_mii_ioctl(phydev, rq, cmd); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 2628 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2630 | static void fec_enet_free_buffers(struct net_device *ndev) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2631 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2632 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabio Estevam | da2191e | 2013-03-20 12:31:07 -0300 | [diff] [blame] | 2633 | unsigned int i; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2634 | struct sk_buff *skb; |
| 2635 | struct bufdesc *bdp; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 2636 | struct fec_enet_priv_tx_q *txq; |
| 2637 | struct fec_enet_priv_rx_q *rxq; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2638 | unsigned int q; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2639 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2640 | for (q = 0; q < fep->num_rx_queues; q++) { |
| 2641 | rxq = fep->rx_queue[q]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2642 | bdp = rxq->bd.base; |
| 2643 | for (i = 0; i < rxq->bd.ring_size; i++) { |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2644 | skb = rxq->rx_skbuff[i]; |
| 2645 | rxq->rx_skbuff[i] = NULL; |
| 2646 | if (skb) { |
| 2647 | dma_unmap_single(&fep->pdev->dev, |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2648 | fec32_to_cpu(bdp->cbd_bufaddr), |
Nimrod Andy | b64bf4b | 2014-09-23 15:40:57 +0800 | [diff] [blame] | 2649 | FEC_ENET_RX_FRSIZE - fep->rx_align, |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2650 | DMA_FROM_DEVICE); |
| 2651 | dev_kfree_skb(skb); |
| 2652 | } |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2653 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
Russell King | 730ee36 | 2014-07-08 00:23:14 +0100 | [diff] [blame] | 2654 | } |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2655 | } |
| 2656 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2657 | for (q = 0; q < fep->num_tx_queues; q++) { |
| 2658 | txq = fep->tx_queue[q]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2659 | bdp = txq->bd.base; |
| 2660 | for (i = 0; i < txq->bd.ring_size; i++) { |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2661 | kfree(txq->tx_bounce[i]); |
| 2662 | txq->tx_bounce[i] = NULL; |
| 2663 | skb = txq->tx_skbuff[i]; |
| 2664 | txq->tx_skbuff[i] = NULL; |
| 2665 | dev_kfree_skb(skb); |
| 2666 | } |
Russell King | 8b7c9ef | 2014-07-08 00:23:25 +0100 | [diff] [blame] | 2667 | } |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2668 | } |
| 2669 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2670 | static void fec_enet_free_queue(struct net_device *ndev) |
| 2671 | { |
| 2672 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2673 | int i; |
| 2674 | struct fec_enet_priv_tx_q *txq; |
| 2675 | |
| 2676 | for (i = 0; i < fep->num_tx_queues; i++) |
| 2677 | if (fep->tx_queue[i] && fep->tx_queue[i]->tso_hdrs) { |
| 2678 | txq = fep->tx_queue[i]; |
| 2679 | dma_free_coherent(NULL, |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2680 | txq->bd.ring_size * TSO_HEADER_SIZE, |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2681 | txq->tso_hdrs, |
| 2682 | txq->tso_hdrs_dma); |
| 2683 | } |
| 2684 | |
| 2685 | for (i = 0; i < fep->num_rx_queues; i++) |
Markus Elfring | 1b4b32c | 2015-02-04 12:56:42 +0100 | [diff] [blame] | 2686 | kfree(fep->rx_queue[i]); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2687 | for (i = 0; i < fep->num_tx_queues; i++) |
Markus Elfring | 1b4b32c | 2015-02-04 12:56:42 +0100 | [diff] [blame] | 2688 | kfree(fep->tx_queue[i]); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2689 | } |
| 2690 | |
| 2691 | static int fec_enet_alloc_queue(struct net_device *ndev) |
| 2692 | { |
| 2693 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2694 | int i; |
| 2695 | int ret = 0; |
| 2696 | struct fec_enet_priv_tx_q *txq; |
| 2697 | |
| 2698 | for (i = 0; i < fep->num_tx_queues; i++) { |
| 2699 | txq = kzalloc(sizeof(*txq), GFP_KERNEL); |
| 2700 | if (!txq) { |
| 2701 | ret = -ENOMEM; |
| 2702 | goto alloc_failed; |
| 2703 | } |
| 2704 | |
| 2705 | fep->tx_queue[i] = txq; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2706 | txq->bd.ring_size = TX_RING_SIZE; |
| 2707 | fep->total_tx_ring_size += fep->tx_queue[i]->bd.ring_size; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2708 | |
| 2709 | txq->tx_stop_threshold = FEC_MAX_SKB_DESCS; |
| 2710 | txq->tx_wake_threshold = |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2711 | (txq->bd.ring_size - txq->tx_stop_threshold) / 2; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2712 | |
| 2713 | txq->tso_hdrs = dma_alloc_coherent(NULL, |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2714 | txq->bd.ring_size * TSO_HEADER_SIZE, |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2715 | &txq->tso_hdrs_dma, |
| 2716 | GFP_KERNEL); |
| 2717 | if (!txq->tso_hdrs) { |
| 2718 | ret = -ENOMEM; |
| 2719 | goto alloc_failed; |
| 2720 | } |
| 2721 | } |
| 2722 | |
| 2723 | for (i = 0; i < fep->num_rx_queues; i++) { |
| 2724 | fep->rx_queue[i] = kzalloc(sizeof(*fep->rx_queue[i]), |
| 2725 | GFP_KERNEL); |
| 2726 | if (!fep->rx_queue[i]) { |
| 2727 | ret = -ENOMEM; |
| 2728 | goto alloc_failed; |
| 2729 | } |
| 2730 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2731 | fep->rx_queue[i]->bd.ring_size = RX_RING_SIZE; |
| 2732 | fep->total_rx_ring_size += fep->rx_queue[i]->bd.ring_size; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2733 | } |
| 2734 | return ret; |
| 2735 | |
| 2736 | alloc_failed: |
| 2737 | fec_enet_free_queue(ndev); |
| 2738 | return ret; |
| 2739 | } |
| 2740 | |
| 2741 | static int |
| 2742 | fec_enet_alloc_rxq_buffers(struct net_device *ndev, unsigned int queue) |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2743 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2744 | struct fec_enet_private *fep = netdev_priv(ndev); |
Fabio Estevam | da2191e | 2013-03-20 12:31:07 -0300 | [diff] [blame] | 2745 | unsigned int i; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2746 | struct sk_buff *skb; |
| 2747 | struct bufdesc *bdp; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 2748 | struct fec_enet_priv_rx_q *rxq; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2749 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2750 | rxq = fep->rx_queue[queue]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2751 | bdp = rxq->bd.base; |
| 2752 | for (i = 0; i < rxq->bd.ring_size; i++) { |
Fabio Estevam | b72061a | 2012-02-07 08:27:31 +0000 | [diff] [blame] | 2753 | skb = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); |
Russell King | ffdce2c | 2014-07-08 00:23:30 +0100 | [diff] [blame] | 2754 | if (!skb) |
| 2755 | goto err_alloc; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2756 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 2757 | if (fec_enet_new_rxbdp(ndev, bdp, skb)) { |
Russell King | 730ee36 | 2014-07-08 00:23:14 +0100 | [diff] [blame] | 2758 | dev_kfree_skb(skb); |
Russell King | ffdce2c | 2014-07-08 00:23:30 +0100 | [diff] [blame] | 2759 | goto err_alloc; |
Duan Fugang-B38611 | d842a31 | 2013-11-14 09:57:10 +0800 | [diff] [blame] | 2760 | } |
Russell King | 730ee36 | 2014-07-08 00:23:14 +0100 | [diff] [blame] | 2761 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 2762 | rxq->rx_skbuff[i] = skb; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2763 | bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2764 | |
| 2765 | if (fep->bufdesc_ex) { |
| 2766 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2767 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2768 | } |
| 2769 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2770 | bdp = fec_enet_get_nextdesc(bdp, &rxq->bd); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2771 | } |
| 2772 | |
| 2773 | /* Set the last buffer to wrap. */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2774 | bdp = fec_enet_get_prevdesc(bdp, &rxq->bd); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2775 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2776 | return 0; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2777 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2778 | err_alloc: |
| 2779 | fec_enet_free_buffers(ndev); |
| 2780 | return -ENOMEM; |
| 2781 | } |
| 2782 | |
| 2783 | static int |
| 2784 | fec_enet_alloc_txq_buffers(struct net_device *ndev, unsigned int queue) |
| 2785 | { |
| 2786 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2787 | unsigned int i; |
| 2788 | struct bufdesc *bdp; |
| 2789 | struct fec_enet_priv_tx_q *txq; |
| 2790 | |
| 2791 | txq = fep->tx_queue[queue]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2792 | bdp = txq->bd.base; |
| 2793 | for (i = 0; i < txq->bd.ring_size; i++) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 2794 | txq->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL); |
| 2795 | if (!txq->tx_bounce[i]) |
Russell King | ffdce2c | 2014-07-08 00:23:30 +0100 | [diff] [blame] | 2796 | goto err_alloc; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2797 | |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2798 | bdp->cbd_sc = cpu_to_fec16(0); |
| 2799 | bdp->cbd_bufaddr = cpu_to_fec32(0); |
Frank Li | 6605b73 | 2012-10-30 18:25:31 +0000 | [diff] [blame] | 2800 | |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2801 | if (fep->bufdesc_ex) { |
| 2802 | struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2803 | ebdp->cbd_esc = cpu_to_fec32(BD_ENET_TX_INT); |
Frank Li | ff43da8 | 2013-01-03 16:04:23 +0000 | [diff] [blame] | 2804 | } |
| 2805 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2806 | bdp = fec_enet_get_nextdesc(bdp, &txq->bd); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2807 | } |
| 2808 | |
| 2809 | /* Set the last buffer to wrap. */ |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 2810 | bdp = fec_enet_get_prevdesc(bdp, &txq->bd); |
Johannes Berg | 5cfa303 | 2016-01-24 16:52:37 +0100 | [diff] [blame] | 2811 | bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2812 | |
| 2813 | return 0; |
Russell King | ffdce2c | 2014-07-08 00:23:30 +0100 | [diff] [blame] | 2814 | |
| 2815 | err_alloc: |
| 2816 | fec_enet_free_buffers(ndev); |
| 2817 | return -ENOMEM; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2818 | } |
| 2819 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 2820 | static int fec_enet_alloc_buffers(struct net_device *ndev) |
| 2821 | { |
| 2822 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 2823 | unsigned int i; |
| 2824 | |
| 2825 | for (i = 0; i < fep->num_rx_queues; i++) |
| 2826 | if (fec_enet_alloc_rxq_buffers(ndev, i)) |
| 2827 | return -ENOMEM; |
| 2828 | |
| 2829 | for (i = 0; i < fep->num_tx_queues; i++) |
| 2830 | if (fec_enet_alloc_txq_buffers(ndev, i)) |
| 2831 | return -ENOMEM; |
| 2832 | return 0; |
| 2833 | } |
| 2834 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2836 | fec_enet_open(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2838 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2839 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 2841 | ret = pm_runtime_get_sync(&fep->pdev->dev); |
Fabio Estevam | b0c6ce2 | 2015-08-12 12:10:23 -0300 | [diff] [blame] | 2842 | if (ret < 0) |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 2843 | return ret; |
| 2844 | |
Nimrod Andy | 5bbde4d | 2014-05-27 15:51:08 +0800 | [diff] [blame] | 2845 | pinctrl_pm_select_default_state(&fep->pdev->dev); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 2846 | ret = fec_enet_clk_enable(ndev, true); |
| 2847 | if (ret) |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 2848 | goto clk_enable; |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 2849 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2850 | /* I should reset the ring buffers here, but I don't yet know |
| 2851 | * a simple way to do that. |
| 2852 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2854 | ret = fec_enet_alloc_buffers(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2855 | if (ret) |
Fabio Estevam | 681d242 | 2014-10-04 13:40:01 -0300 | [diff] [blame] | 2856 | goto err_enet_alloc; |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2857 | |
Nimrod Andy | 55dd275 | 2015-06-23 15:32:51 +0800 | [diff] [blame] | 2858 | /* Init MAC prior to mii bus probe */ |
| 2859 | fec_restart(ndev); |
| 2860 | |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 2861 | /* Probe and connect to PHY when open the interface */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2862 | ret = fec_enet_mii_probe(ndev); |
Fabio Estevam | 681d242 | 2014-10-04 13:40:01 -0300 | [diff] [blame] | 2863 | if (ret) |
| 2864 | goto err_enet_mii_probe; |
Russell King | ce5eaf0 | 2014-02-18 12:55:42 +0000 | [diff] [blame] | 2865 | |
Lucas Stach | 2938090 | 2016-06-03 18:31:19 +0200 | [diff] [blame] | 2866 | if (fep->quirks & FEC_QUIRK_ERR006687) |
| 2867 | imx6q_cpuidle_fec_irqs_used(); |
| 2868 | |
Russell King | ce5eaf0 | 2014-02-18 12:55:42 +0000 | [diff] [blame] | 2869 | napi_enable(&fep->napi); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2870 | phy_start(ndev->phydev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 2871 | netif_tx_start_all_queues(ndev); |
| 2872 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 2873 | device_set_wakeup_enable(&ndev->dev, fep->wol_flag & |
| 2874 | FEC_WOL_FLAG_ENABLE); |
| 2875 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 2876 | return 0; |
Fabio Estevam | 681d242 | 2014-10-04 13:40:01 -0300 | [diff] [blame] | 2877 | |
| 2878 | err_enet_mii_probe: |
| 2879 | fec_enet_free_buffers(ndev); |
| 2880 | err_enet_alloc: |
| 2881 | fec_enet_clk_enable(ndev, false); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 2882 | clk_enable: |
| 2883 | pm_runtime_mark_last_busy(&fep->pdev->dev); |
| 2884 | pm_runtime_put_autosuspend(&fep->pdev->dev); |
Fabio Estevam | 681d242 | 2014-10-04 13:40:01 -0300 | [diff] [blame] | 2885 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); |
| 2886 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2887 | } |
| 2888 | |
| 2889 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2890 | fec_enet_close(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2891 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2892 | struct fec_enet_private *fep = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2894 | phy_stop(ndev->phydev); |
Russell King | d76cfae | 2014-07-08 00:23:04 +0100 | [diff] [blame] | 2895 | |
Russell King | 31a6de3 | 2014-07-08 12:40:23 +0100 | [diff] [blame] | 2896 | if (netif_device_present(ndev)) { |
| 2897 | napi_disable(&fep->napi); |
| 2898 | netif_tx_disable(ndev); |
Russell King | 8bbbd3c | 2014-07-08 12:40:02 +0100 | [diff] [blame] | 2899 | fec_stop(ndev); |
Russell King | 31a6de3 | 2014-07-08 12:40:23 +0100 | [diff] [blame] | 2900 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 2902 | phy_disconnect(ndev->phydev); |
Bryan Wu | 418bd0d | 2010-05-28 03:40:39 -0700 | [diff] [blame] | 2903 | |
Lucas Stach | 2938090 | 2016-06-03 18:31:19 +0200 | [diff] [blame] | 2904 | if (fep->quirks & FEC_QUIRK_ERR006687) |
| 2905 | imx6q_cpuidle_fec_irqs_unused(); |
| 2906 | |
Nikita Yushchenko | 80cca77 | 2016-11-29 09:44:51 +0300 | [diff] [blame] | 2907 | fec_enet_update_ethtool_stats(ndev); |
| 2908 | |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 2909 | fec_enet_clk_enable(ndev, false); |
Nimrod Andy | 5bbde4d | 2014-05-27 15:51:08 +0800 | [diff] [blame] | 2910 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 2911 | pm_runtime_mark_last_busy(&fep->pdev->dev); |
| 2912 | pm_runtime_put_autosuspend(&fep->pdev->dev); |
| 2913 | |
Uwe Kleine-König | db8880b | 2011-01-19 20:26:39 +0100 | [diff] [blame] | 2914 | fec_enet_free_buffers(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 2915 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | return 0; |
| 2917 | } |
| 2918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | /* Set or clear the multicast filter for this adaptor. |
| 2920 | * Skeleton taken from sunlance driver. |
| 2921 | * The CPM Ethernet implementation allows Multicast as well as individual |
| 2922 | * MAC address filtering. Some of the drivers check to make sure it is |
| 2923 | * a group multicast address, and discard those that are not. I guess I |
| 2924 | * will do the same for now, but just remove the test if you want |
| 2925 | * individual filtering as well (do the upper net layers want or support |
| 2926 | * this kind of feature?). |
| 2927 | */ |
| 2928 | |
Jiri Kosina | 6176e89 | 2016-08-12 16:34:49 +0200 | [diff] [blame] | 2929 | #define FEC_HASH_BITS 6 /* #bits in hash */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | #define CRC32_POLY 0xEDB88320 |
| 2931 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2932 | static void set_multicast_list(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2934 | struct fec_enet_private *fep = netdev_priv(ndev); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2935 | struct netdev_hw_addr *ha; |
Jiri Pirko | 48e2f18 | 2010-02-22 09:22:26 +0000 | [diff] [blame] | 2936 | unsigned int i, bit, data, crc, tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | unsigned char hash; |
Rui Sousa | c13a05a | 2017-02-13 10:01:25 +0800 | [diff] [blame] | 2938 | unsigned int hash_high = 0, hash_low = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2940 | if (ndev->flags & IFF_PROMISC) { |
Sascha Hauer | f44d630 | 2009-04-15 03:11:30 +0000 | [diff] [blame] | 2941 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
| 2942 | tmp |= 0x8; |
| 2943 | writel(tmp, fep->hwp + FEC_R_CNTRL); |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2944 | return; |
| 2945 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2947 | tmp = readl(fep->hwp + FEC_R_CNTRL); |
| 2948 | tmp &= ~0x8; |
| 2949 | writel(tmp, fep->hwp + FEC_R_CNTRL); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2950 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2951 | if (ndev->flags & IFF_ALLMULTI) { |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2952 | /* Catch all multicast addresses, so set the |
| 2953 | * filter to all 1's |
| 2954 | */ |
| 2955 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 2956 | writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2958 | return; |
| 2959 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2960 | |
Rui Sousa | c13a05a | 2017-02-13 10:01:25 +0800 | [diff] [blame] | 2961 | /* Add the addresses in hash register */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2962 | netdev_for_each_mc_addr(ha, ndev) { |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2963 | /* calculate crc32 value of mac address */ |
| 2964 | crc = 0xffffffff; |
| 2965 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2966 | for (i = 0; i < ndev->addr_len; i++) { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2967 | data = ha->addr[i]; |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2968 | for (bit = 0; bit < 8; bit++, data >>= 1) { |
| 2969 | crc = (crc >> 1) ^ |
| 2970 | (((crc ^ data) & 1) ? CRC32_POLY : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | } |
| 2972 | } |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2973 | |
Jiri Kosina | 6176e89 | 2016-08-12 16:34:49 +0200 | [diff] [blame] | 2974 | /* only upper 6 bits (FEC_HASH_BITS) are used |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2975 | * which point to specific bit in he hash registers |
| 2976 | */ |
Jiri Kosina | 6176e89 | 2016-08-12 16:34:49 +0200 | [diff] [blame] | 2977 | hash = (crc >> (32 - FEC_HASH_BITS)) & 0x3f; |
Sascha Hauer | 4e83183 | 2009-04-15 01:32:19 +0000 | [diff] [blame] | 2978 | |
Rui Sousa | c13a05a | 2017-02-13 10:01:25 +0800 | [diff] [blame] | 2979 | if (hash > 31) |
| 2980 | hash_high |= 1 << (hash - 32); |
| 2981 | else |
| 2982 | hash_low |= 1 << hash; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2983 | } |
Rui Sousa | c13a05a | 2017-02-13 10:01:25 +0800 | [diff] [blame] | 2984 | |
| 2985 | writel(hash_high, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 2986 | writel(hash_low, fep->hwp + FEC_GRP_HASH_TABLE_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | } |
| 2988 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 2989 | /* Set a MAC change in hardware. */ |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 2990 | static int |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2991 | fec_set_mac_address(struct net_device *ndev, void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 2993 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 2994 | struct sockaddr *addr = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | |
Lucas Stach | 44934fa | 2014-03-30 21:32:08 +0200 | [diff] [blame] | 2996 | if (addr) { |
| 2997 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2998 | return -EADDRNOTAVAIL; |
| 2999 | memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len); |
| 3000 | } |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 3001 | |
Nimrod Andy | 9638d19 | 2015-09-10 09:35:39 +0800 | [diff] [blame] | 3002 | /* Add netif status check here to avoid system hang in below case: |
| 3003 | * ifconfig ethx down; ifconfig ethx hw ether xx:xx:xx:xx:xx:xx; |
| 3004 | * After ethx down, fec all clocks are gated off and then register |
| 3005 | * access causes system hang. |
| 3006 | */ |
| 3007 | if (!netif_running(ndev)) |
| 3008 | return 0; |
| 3009 | |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3010 | writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) | |
| 3011 | (ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24), |
Sascha Hauer | f44d630 | 2009-04-15 03:11:30 +0000 | [diff] [blame] | 3012 | fep->hwp + FEC_ADDR_LOW); |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3013 | writel((ndev->dev_addr[5] << 16) | (ndev->dev_addr[4] << 24), |
Mattias Walström | 7cff094 | 2010-05-05 00:55:48 -0700 | [diff] [blame] | 3014 | fep->hwp + FEC_ADDR_HIGH); |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 3015 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | } |
| 3017 | |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 3018 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Ben Hutchings | 49ce9c2 | 2012-07-10 10:56:00 +0000 | [diff] [blame] | 3019 | /** |
| 3020 | * fec_poll_controller - FEC Poll controller function |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 3021 | * @dev: The FEC network adapter |
| 3022 | * |
| 3023 | * Polled functionality used by netconsole and others in non interrupt mode |
| 3024 | * |
| 3025 | */ |
Wei Yongjun | 47a5247 | 2013-03-20 05:06:11 +0000 | [diff] [blame] | 3026 | static void fec_poll_controller(struct net_device *dev) |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 3027 | { |
| 3028 | int i; |
| 3029 | struct fec_enet_private *fep = netdev_priv(dev); |
| 3030 | |
| 3031 | for (i = 0; i < FEC_IRQ_NUM; i++) { |
| 3032 | if (fep->irq[i] > 0) { |
| 3033 | disable_irq(fep->irq[i]); |
| 3034 | fec_enet_interrupt(fep->irq[i], dev); |
| 3035 | enable_irq(fep->irq[i]); |
| 3036 | } |
| 3037 | } |
| 3038 | } |
| 3039 | #endif |
| 3040 | |
Nimrod Andy | 5bc2672 | 2014-10-13 10:53:48 +0800 | [diff] [blame] | 3041 | static inline void fec_enet_set_netdev_features(struct net_device *netdev, |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 3042 | netdev_features_t features) |
| 3043 | { |
| 3044 | struct fec_enet_private *fep = netdev_priv(netdev); |
| 3045 | netdev_features_t changed = features ^ netdev->features; |
| 3046 | |
| 3047 | netdev->features = features; |
| 3048 | |
| 3049 | /* Receive checksum has been changed */ |
| 3050 | if (changed & NETIF_F_RXCSUM) { |
| 3051 | if (features & NETIF_F_RXCSUM) |
| 3052 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; |
| 3053 | else |
| 3054 | fep->csum_flags &= ~FLAG_RX_CSUM_ENABLED; |
Russell King | 8506fa1 | 2014-07-08 12:40:33 +0100 | [diff] [blame] | 3055 | } |
Nimrod Andy | 5bc2672 | 2014-10-13 10:53:48 +0800 | [diff] [blame] | 3056 | } |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 3057 | |
Nimrod Andy | 5bc2672 | 2014-10-13 10:53:48 +0800 | [diff] [blame] | 3058 | static int fec_set_features(struct net_device *netdev, |
| 3059 | netdev_features_t features) |
| 3060 | { |
| 3061 | struct fec_enet_private *fep = netdev_priv(netdev); |
| 3062 | netdev_features_t changed = features ^ netdev->features; |
| 3063 | |
Fabio Estevam | 5b40f70 | 2015-09-25 18:31:32 -0300 | [diff] [blame] | 3064 | if (netif_running(netdev) && changed & NETIF_F_RXCSUM) { |
Nimrod Andy | 5bc2672 | 2014-10-13 10:53:48 +0800 | [diff] [blame] | 3065 | napi_disable(&fep->napi); |
| 3066 | netif_tx_lock_bh(netdev); |
| 3067 | fec_stop(netdev); |
| 3068 | fec_enet_set_netdev_features(netdev, features); |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 3069 | fec_restart(netdev); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3070 | netif_tx_wake_all_queues(netdev); |
Russell King | 8506fa1 | 2014-07-08 12:40:33 +0100 | [diff] [blame] | 3071 | netif_tx_unlock_bh(netdev); |
| 3072 | napi_enable(&fep->napi); |
Nimrod Andy | 5bc2672 | 2014-10-13 10:53:48 +0800 | [diff] [blame] | 3073 | } else { |
| 3074 | fec_enet_set_netdev_features(netdev, features); |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 3075 | } |
| 3076 | |
| 3077 | return 0; |
| 3078 | } |
| 3079 | |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 3080 | static const struct net_device_ops fec_netdev_ops = { |
| 3081 | .ndo_open = fec_enet_open, |
| 3082 | .ndo_stop = fec_enet_close, |
| 3083 | .ndo_start_xmit = fec_enet_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 3084 | .ndo_set_rx_mode = set_multicast_list, |
Ben Hutchings | 635ecaa | 2009-07-09 17:59:01 +0000 | [diff] [blame] | 3085 | .ndo_change_mtu = eth_change_mtu, |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 3086 | .ndo_validate_addr = eth_validate_addr, |
| 3087 | .ndo_tx_timeout = fec_timeout, |
| 3088 | .ndo_set_mac_address = fec_set_mac_address, |
Uwe Kleine-König | db8880b | 2011-01-19 20:26:39 +0100 | [diff] [blame] | 3089 | .ndo_do_ioctl = fec_enet_ioctl, |
Xiao Jiang | 7f5c6ad | 2011-09-29 02:15:57 +0000 | [diff] [blame] | 3090 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 3091 | .ndo_poll_controller = fec_poll_controller, |
| 3092 | #endif |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 3093 | .ndo_set_features = fec_set_features, |
Sascha Hauer | 009fda8 | 2009-04-15 01:32:23 +0000 | [diff] [blame] | 3094 | }; |
| 3095 | |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 3096 | static const unsigned short offset_des_active_rxq[] = { |
| 3097 | FEC_R_DES_ACTIVE_0, FEC_R_DES_ACTIVE_1, FEC_R_DES_ACTIVE_2 |
| 3098 | }; |
| 3099 | |
| 3100 | static const unsigned short offset_des_active_txq[] = { |
| 3101 | FEC_X_DES_ACTIVE_0, FEC_X_DES_ACTIVE_1, FEC_X_DES_ACTIVE_2 |
| 3102 | }; |
| 3103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3104 | /* |
| 3105 | * XXX: We need to clean up on failure exits here. |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3106 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3107 | */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3108 | static int fec_enet_init(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | { |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3110 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | f0b3fbe | 2009-04-15 01:32:24 +0000 | [diff] [blame] | 3111 | struct bufdesc *cbd_base; |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3112 | dma_addr_t bd_dma; |
Nimrod Andy | 55d0218 | 2014-06-12 08:16:21 +0800 | [diff] [blame] | 3113 | int bd_size; |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 3114 | unsigned int i; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3115 | unsigned dsize = fep->bufdesc_ex ? sizeof(struct bufdesc_ex) : |
| 3116 | sizeof(struct bufdesc); |
| 3117 | unsigned dsize_log2 = __fls(dsize); |
Nimrod Andy | 55d0218 | 2014-06-12 08:16:21 +0800 | [diff] [blame] | 3118 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3119 | WARN_ON(dsize != (1 << dsize_log2)); |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 3120 | #if defined(CONFIG_ARM) |
| 3121 | fep->rx_align = 0xf; |
| 3122 | fep->tx_align = 0xf; |
| 3123 | #else |
| 3124 | fep->rx_align = 0x3; |
| 3125 | fep->tx_align = 0x3; |
| 3126 | #endif |
| 3127 | |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 3128 | fec_enet_alloc_queue(ndev); |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 3129 | |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3130 | bd_size = (fep->total_tx_ring_size + fep->total_rx_ring_size) * dsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3131 | |
Sascha Hauer | 8d4dd5c | 2009-04-15 01:32:17 +0000 | [diff] [blame] | 3132 | /* Allocate memory for buffer descriptors. */ |
Lucas Stach | c0a1a0a | 2015-07-23 16:06:19 +0200 | [diff] [blame] | 3133 | cbd_base = dmam_alloc_coherent(&fep->pdev->dev, bd_size, &bd_dma, |
| 3134 | GFP_KERNEL); |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3135 | if (!cbd_base) { |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3136 | return -ENOMEM; |
| 3137 | } |
Sebastian Siewior | 3b2b74c | 2008-05-01 14:08:12 +1000 | [diff] [blame] | 3138 | |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3139 | memset(cbd_base, 0, bd_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3140 | |
Shawn Guo | 49da97d | 2011-01-05 21:13:11 +0000 | [diff] [blame] | 3141 | /* Get the Ethernet address */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3142 | fec_get_mac(ndev); |
Lucas Stach | 44934fa | 2014-03-30 21:32:08 +0200 | [diff] [blame] | 3143 | /* make sure MAC we just acquired is programmed into the hw */ |
| 3144 | fec_set_mac_address(ndev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3145 | |
Sascha Hauer | 8d4dd5c | 2009-04-15 01:32:17 +0000 | [diff] [blame] | 3146 | /* Set receive and transmit descriptor base. */ |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 3147 | for (i = 0; i < fep->num_rx_queues; i++) { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3148 | struct fec_enet_priv_rx_q *rxq = fep->rx_queue[i]; |
| 3149 | unsigned size = dsize * rxq->bd.ring_size; |
| 3150 | |
| 3151 | rxq->bd.qid = i; |
| 3152 | rxq->bd.base = cbd_base; |
| 3153 | rxq->bd.cur = cbd_base; |
| 3154 | rxq->bd.dma = bd_dma; |
| 3155 | rxq->bd.dsize = dsize; |
| 3156 | rxq->bd.dsize_log2 = dsize_log2; |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 3157 | rxq->bd.reg_desc_active = fep->hwp + offset_des_active_rxq[i]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3158 | bd_dma += size; |
| 3159 | cbd_base = (struct bufdesc *)(((void *)cbd_base) + size); |
| 3160 | rxq->bd.last = (struct bufdesc *)(((void *)cbd_base) - dsize); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 3161 | } |
| 3162 | |
| 3163 | for (i = 0; i < fep->num_tx_queues; i++) { |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3164 | struct fec_enet_priv_tx_q *txq = fep->tx_queue[i]; |
| 3165 | unsigned size = dsize * txq->bd.ring_size; |
| 3166 | |
| 3167 | txq->bd.qid = i; |
| 3168 | txq->bd.base = cbd_base; |
| 3169 | txq->bd.cur = cbd_base; |
| 3170 | txq->bd.dma = bd_dma; |
| 3171 | txq->bd.dsize = dsize; |
| 3172 | txq->bd.dsize_log2 = dsize_log2; |
Troy Kisky | 53bb20d | 2016-02-05 14:52:47 -0700 | [diff] [blame] | 3173 | txq->bd.reg_desc_active = fep->hwp + offset_des_active_txq[i]; |
Troy Kisky | 7355f27 | 2016-02-05 14:52:46 -0700 | [diff] [blame] | 3174 | bd_dma += size; |
| 3175 | cbd_base = (struct bufdesc *)(((void *)cbd_base) + size); |
| 3176 | txq->bd.last = (struct bufdesc *)(((void *)cbd_base) - dsize); |
Frank Li | 59d0f74 | 2014-09-13 05:00:50 +0800 | [diff] [blame] | 3177 | } |
Fugang Duan | 4d494cd | 2014-09-13 05:00:48 +0800 | [diff] [blame] | 3178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3179 | |
Sascha Hauer | 22f6b86 | 2009-04-15 01:32:18 +0000 | [diff] [blame] | 3180 | /* The FEC Ethernet specific entries in the device structure */ |
Uwe Kleine-König | c556167 | 2011-01-19 11:58:12 +0100 | [diff] [blame] | 3181 | ndev->watchdog_timeo = TX_TIMEOUT; |
| 3182 | ndev->netdev_ops = &fec_netdev_ops; |
| 3183 | ndev->ethtool_ops = &fec_enet_ethtool_ops; |
Rob Herring | 633e753 | 2010-02-05 08:56:20 +0000 | [diff] [blame] | 3184 | |
Frank Li | dc97538 | 2013-01-28 18:31:42 +0000 | [diff] [blame] | 3185 | writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK); |
Fabio Estevam | 322555f | 2013-08-27 17:35:08 -0300 | [diff] [blame] | 3186 | 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] | 3187 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3188 | if (fep->quirks & FEC_QUIRK_HAS_VLAN) |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 3189 | /* enable hw VLAN support */ |
| 3190 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; |
Jim Baxter | cdffcf1 | 2013-07-02 22:52:56 +0100 | [diff] [blame] | 3191 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3192 | if (fep->quirks & FEC_QUIRK_HAS_CSUM) { |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 3193 | ndev->gso_max_segs = FEC_MAX_TSO_SEGS; |
| 3194 | |
Shawn Guo | 4849625 | 2013-05-08 21:08:22 +0000 | [diff] [blame] | 3195 | /* enable hw accelerator */ |
| 3196 | ndev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
Nimrod Andy | 79f3391 | 2014-06-12 08:16:23 +0800 | [diff] [blame] | 3197 | | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO); |
Shawn Guo | 4849625 | 2013-05-08 21:08:22 +0000 | [diff] [blame] | 3198 | fep->csum_flags |= FLAG_RX_CSUM_ENABLED; |
| 3199 | } |
Jim Baxter | 4c09eed | 2013-04-19 08:10:49 +0000 | [diff] [blame] | 3200 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3201 | if (fep->quirks & FEC_QUIRK_HAS_AVB) { |
Fugang Duan | 41ef84c | 2014-09-13 05:00:54 +0800 | [diff] [blame] | 3202 | fep->tx_align = 0; |
| 3203 | fep->rx_align = 0x3f; |
| 3204 | } |
| 3205 | |
Nimrod Andy | 09d1e54 | 2014-06-12 08:16:20 +0800 | [diff] [blame] | 3206 | ndev->hw_features = ndev->features; |
| 3207 | |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 3208 | fec_restart(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3209 | |
Nikita Yushchenko | 80cca77 | 2016-11-29 09:44:51 +0300 | [diff] [blame] | 3210 | fec_enet_update_ethtool_stats(ndev); |
| 3211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3212 | return 0; |
| 3213 | } |
| 3214 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3215 | #ifdef CONFIG_OF |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3216 | static int fec_reset_phy(struct platform_device *pdev) |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3217 | { |
| 3218 | int err, phy_reset; |
Bernhard Walle | 962d8cd | 2016-03-03 10:15:55 +0100 | [diff] [blame] | 3219 | bool active_high = false; |
Shawn Guo | a3caad0 | 2012-06-27 03:45:24 +0000 | [diff] [blame] | 3220 | int msec = 1; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3221 | struct device_node *np = pdev->dev.of_node; |
| 3222 | |
| 3223 | if (!np) |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3224 | return 0; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3225 | |
Shawn Guo | a3caad0 | 2012-06-27 03:45:24 +0000 | [diff] [blame] | 3226 | of_property_read_u32(np, "phy-reset-duration", &msec); |
| 3227 | /* A sane reset duration should not be longer than 1s */ |
| 3228 | if (msec > 1000) |
| 3229 | msec = 1; |
| 3230 | |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3231 | phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3232 | if (phy_reset == -EPROBE_DEFER) |
| 3233 | return phy_reset; |
| 3234 | else if (!gpio_is_valid(phy_reset)) |
| 3235 | return 0; |
Fabio Estevam | 07dcf8e | 2013-02-18 10:20:31 +0000 | [diff] [blame] | 3236 | |
Bernhard Walle | 962d8cd | 2016-03-03 10:15:55 +0100 | [diff] [blame] | 3237 | active_high = of_property_read_bool(np, "phy-reset-active-high"); |
Bernhard Walle | 64f10f6 | 2016-02-08 21:21:13 +0100 | [diff] [blame] | 3238 | |
Shawn Guo | 119fc00 | 2012-06-27 03:45:22 +0000 | [diff] [blame] | 3239 | err = devm_gpio_request_one(&pdev->dev, phy_reset, |
Bernhard Walle | 962d8cd | 2016-03-03 10:15:55 +0100 | [diff] [blame] | 3240 | active_high ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, |
Bernhard Walle | 64f10f6 | 2016-02-08 21:21:13 +0100 | [diff] [blame] | 3241 | "phy-reset"); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3242 | if (err) { |
Fabio Estevam | 07dcf8e | 2013-02-18 10:20:31 +0000 | [diff] [blame] | 3243 | dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3244 | return err; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3245 | } |
Stefan Wahren | eb37c563 | 2016-06-08 20:42:46 +0000 | [diff] [blame] | 3246 | |
| 3247 | if (msec > 20) |
| 3248 | msleep(msec); |
| 3249 | else |
| 3250 | usleep_range(msec * 1000, msec * 1000 + 1000); |
| 3251 | |
Bernhard Walle | 962d8cd | 2016-03-03 10:15:55 +0100 | [diff] [blame] | 3252 | gpio_set_value_cansleep(phy_reset, !active_high); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3253 | |
| 3254 | return 0; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3255 | } |
| 3256 | #else /* CONFIG_OF */ |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3257 | static int fec_reset_phy(struct platform_device *pdev) |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3258 | { |
| 3259 | /* |
| 3260 | * In case of platform probe, the reset has been done |
| 3261 | * by machine code. |
| 3262 | */ |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3263 | return 0; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3264 | } |
| 3265 | #endif /* CONFIG_OF */ |
| 3266 | |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3267 | static void |
| 3268 | fec_enet_get_queue_num(struct platform_device *pdev, int *num_tx, int *num_rx) |
| 3269 | { |
| 3270 | struct device_node *np = pdev->dev.of_node; |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3271 | |
| 3272 | *num_tx = *num_rx = 1; |
| 3273 | |
| 3274 | if (!np || !of_device_is_available(np)) |
| 3275 | return; |
| 3276 | |
| 3277 | /* parse the num of tx and rx queues */ |
Saurabh Sengar | 73b1c90 | 2015-11-23 19:21:48 +0530 | [diff] [blame] | 3278 | of_property_read_u32(np, "fsl,num-tx-queues", num_tx); |
Frank Li | b7bd75c | 2014-09-17 05:18:51 +0800 | [diff] [blame] | 3279 | |
Saurabh Sengar | 73b1c90 | 2015-11-23 19:21:48 +0530 | [diff] [blame] | 3280 | of_property_read_u32(np, "fsl,num-rx-queues", num_rx); |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3281 | |
| 3282 | if (*num_tx < 1 || *num_tx > FEC_ENET_MAX_TX_QS) { |
Frank Li | b7bd75c | 2014-09-17 05:18:51 +0800 | [diff] [blame] | 3283 | dev_warn(&pdev->dev, "Invalid num_tx(=%d), fall back to 1\n", |
| 3284 | *num_tx); |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3285 | *num_tx = 1; |
| 3286 | return; |
| 3287 | } |
| 3288 | |
| 3289 | if (*num_rx < 1 || *num_rx > FEC_ENET_MAX_RX_QS) { |
Frank Li | b7bd75c | 2014-09-17 05:18:51 +0800 | [diff] [blame] | 3290 | dev_warn(&pdev->dev, "Invalid num_rx(=%d), fall back to 1\n", |
| 3291 | *num_rx); |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3292 | *num_rx = 1; |
| 3293 | return; |
| 3294 | } |
| 3295 | |
| 3296 | } |
| 3297 | |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 3298 | static int |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3299 | fec_probe(struct platform_device *pdev) |
| 3300 | { |
| 3301 | struct fec_enet_private *fep; |
Baruch Siach | 5eb32bd | 2010-05-24 00:36:13 -0700 | [diff] [blame] | 3302 | struct fec_platform_data *pdata; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3303 | struct net_device *ndev; |
| 3304 | int i, irq, ret = 0; |
| 3305 | struct resource *r; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3306 | const struct of_device_id *of_id; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 3307 | static int dev_id; |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 3308 | struct device_node *np = pdev->dev.of_node, *phy_node; |
Frank Li | b7bd75c | 2014-09-17 05:18:51 +0800 | [diff] [blame] | 3309 | int num_tx_qs; |
| 3310 | int num_rx_qs; |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3311 | |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3312 | fec_enet_get_queue_num(pdev, &num_tx_qs, &num_rx_qs); |
| 3313 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3314 | /* Init network device */ |
Nikita Yushchenko | 80cca77 | 2016-11-29 09:44:51 +0300 | [diff] [blame] | 3315 | ndev = alloc_etherdev_mqs(sizeof(struct fec_enet_private) + |
Nikita Yushchenko | f85de66 | 2016-12-06 09:26:53 +0300 | [diff] [blame] | 3316 | FEC_STATS_SIZE, num_tx_qs, num_rx_qs); |
Fabio Estevam | 83e519b | 2013-03-11 07:32:55 +0000 | [diff] [blame] | 3317 | if (!ndev) |
| 3318 | return -ENOMEM; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3319 | |
| 3320 | SET_NETDEV_DEV(ndev, &pdev->dev); |
| 3321 | |
| 3322 | /* setup board info structure */ |
| 3323 | fep = netdev_priv(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3324 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3325 | of_id = of_match_device(fec_dt_ids, &pdev->dev); |
| 3326 | if (of_id) |
| 3327 | pdev->id_entry = of_id->data; |
| 3328 | fep->quirks = pdev->id_entry->driver_data; |
| 3329 | |
Hubert Feurstein | 0c81859 | 2015-01-07 14:48:17 +0100 | [diff] [blame] | 3330 | fep->netdev = ndev; |
Fugang Duan | 9fc095f | 2014-09-13 05:00:49 +0800 | [diff] [blame] | 3331 | fep->num_rx_queues = num_rx_qs; |
| 3332 | fep->num_tx_queues = num_tx_qs; |
| 3333 | |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 3334 | #if !defined(CONFIG_M5272) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 3335 | /* default enable pause frame auto negotiation */ |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3336 | if (fep->quirks & FEC_QUIRK_HAS_GBIT) |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 3337 | fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG; |
Guenter Roeck | d139193 | 2013-06-18 10:04:59 -0700 | [diff] [blame] | 3338 | #endif |
Frank Li | baa70a5 | 2013-01-16 16:55:58 +0000 | [diff] [blame] | 3339 | |
Nimrod Andy | 5bbde4d | 2014-05-27 15:51:08 +0800 | [diff] [blame] | 3340 | /* Select default pin state */ |
| 3341 | pinctrl_pm_select_default_state(&pdev->dev); |
| 3342 | |
Fabio Estevam | 399db75 | 2013-07-21 13:25:03 -0300 | [diff] [blame] | 3343 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Tushar Behera | 941e173 | 2013-06-10 17:05:05 +0530 | [diff] [blame] | 3344 | fep->hwp = devm_ioremap_resource(&pdev->dev, r); |
| 3345 | if (IS_ERR(fep->hwp)) { |
| 3346 | ret = PTR_ERR(fep->hwp); |
| 3347 | goto failed_ioremap; |
| 3348 | } |
| 3349 | |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 3350 | fep->pdev = pdev; |
Shawn Guo | 43af940 | 2011-12-05 05:01:15 +0000 | [diff] [blame] | 3351 | fep->dev_id = dev_id++; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3352 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3353 | platform_set_drvdata(pdev, ndev); |
| 3354 | |
Lucas Stach | 2938090 | 2016-06-03 18:31:19 +0200 | [diff] [blame] | 3355 | if ((of_machine_is_compatible("fsl,imx6q") || |
| 3356 | of_machine_is_compatible("fsl,imx6dl")) && |
| 3357 | !of_property_read_bool(np, "fsl,err006687-workaround-present")) |
| 3358 | fep->quirks |= FEC_QUIRK_ERR006687; |
| 3359 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3360 | if (of_get_property(np, "fsl,magic-packet", NULL)) |
| 3361 | fep->wol_flag |= FEC_WOL_HAS_MAGIC_PACKET; |
| 3362 | |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 3363 | phy_node = of_parse_phandle(np, "phy-handle", 0); |
| 3364 | if (!phy_node && of_phy_is_fixed_link(np)) { |
| 3365 | ret = of_phy_register_fixed_link(np); |
| 3366 | if (ret < 0) { |
| 3367 | dev_err(&pdev->dev, |
| 3368 | "broken fixed-link specification\n"); |
| 3369 | goto failed_phy; |
| 3370 | } |
| 3371 | phy_node = of_node_get(np); |
| 3372 | } |
| 3373 | fep->phy_node = phy_node; |
| 3374 | |
Guenter Roeck | 6c5f780 | 2013-04-02 09:35:10 +0000 | [diff] [blame] | 3375 | ret = of_get_phy_mode(pdev->dev.of_node); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3376 | if (ret < 0) { |
Jingoo Han | 94660ba | 2013-08-30 13:56:26 +0900 | [diff] [blame] | 3377 | pdata = dev_get_platdata(&pdev->dev); |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3378 | if (pdata) |
| 3379 | fep->phy_interface = pdata->phy; |
| 3380 | else |
| 3381 | fep->phy_interface = PHY_INTERFACE_MODE_MII; |
| 3382 | } else { |
| 3383 | fep->phy_interface = ret; |
| 3384 | } |
| 3385 | |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3386 | fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
| 3387 | if (IS_ERR(fep->clk_ipg)) { |
| 3388 | ret = PTR_ERR(fep->clk_ipg); |
| 3389 | goto failed_clk; |
| 3390 | } |
| 3391 | |
| 3392 | fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); |
| 3393 | if (IS_ERR(fep->clk_ahb)) { |
| 3394 | ret = PTR_ERR(fep->clk_ahb); |
| 3395 | goto failed_clk; |
| 3396 | } |
| 3397 | |
Fugang Duan | d851b47 | 2014-09-17 05:18:52 +0800 | [diff] [blame] | 3398 | fep->itr_clk_rate = clk_get_rate(fep->clk_ahb); |
| 3399 | |
Linus Torvalds | 38f56f3 | 2013-05-07 11:06:17 -0700 | [diff] [blame] | 3400 | /* enet_out is optional, depends on board */ |
| 3401 | fep->clk_enet_out = devm_clk_get(&pdev->dev, "enet_out"); |
| 3402 | if (IS_ERR(fep->clk_enet_out)) |
| 3403 | fep->clk_enet_out = NULL; |
| 3404 | |
Nimrod Andy | 91c0d98 | 2014-08-21 17:09:38 +0800 | [diff] [blame] | 3405 | fep->ptp_clk_on = false; |
| 3406 | mutex_init(&fep->ptp_clk_mutex); |
Fugang Duan | 9b5330e | 2014-09-13 05:00:46 +0800 | [diff] [blame] | 3407 | |
| 3408 | /* clk_ref is optional, depends on board */ |
| 3409 | fep->clk_ref = devm_clk_get(&pdev->dev, "enet_clk_ref"); |
| 3410 | if (IS_ERR(fep->clk_ref)) |
| 3411 | fep->clk_ref = NULL; |
| 3412 | |
Lothar Waßmann | 6b7e400 | 2014-11-17 10:51:21 +0100 | [diff] [blame] | 3413 | fep->bufdesc_ex = fep->quirks & FEC_QUIRK_HAS_BUFDESC_EX; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3414 | fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp"); |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3415 | if (IS_ERR(fep->clk_ptp)) { |
Linus Torvalds | 38f56f3 | 2013-05-07 11:06:17 -0700 | [diff] [blame] | 3416 | fep->clk_ptp = NULL; |
Lothar Waßmann | 217b584 | 2014-11-17 10:51:20 +0100 | [diff] [blame] | 3417 | fep->bufdesc_ex = false; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3418 | } |
| 3419 | |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 3420 | ret = fec_enet_clk_enable(ndev, true); |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 3421 | if (ret) |
| 3422 | goto failed_clk; |
| 3423 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3424 | ret = clk_prepare_enable(fep->clk_ipg); |
| 3425 | if (ret) |
| 3426 | goto failed_clk_ipg; |
| 3427 | |
Fabio Estevam | f4e9f3d | 2013-05-27 03:48:29 +0000 | [diff] [blame] | 3428 | fep->reg_phy = devm_regulator_get(&pdev->dev, "phy"); |
| 3429 | if (!IS_ERR(fep->reg_phy)) { |
| 3430 | ret = regulator_enable(fep->reg_phy); |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3431 | if (ret) { |
| 3432 | dev_err(&pdev->dev, |
| 3433 | "Failed to enable phy regulator: %d\n", ret); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3434 | clk_disable_unprepare(fep->clk_ipg); |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3435 | goto failed_regulator; |
| 3436 | } |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 3437 | } else { |
| 3438 | fep->reg_phy = NULL; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3439 | } |
| 3440 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3441 | pm_runtime_set_autosuspend_delay(&pdev->dev, FEC_MDIO_PM_TIMEOUT); |
| 3442 | pm_runtime_use_autosuspend(&pdev->dev); |
Lucas Stach | 14d2b7c | 2015-08-03 17:50:11 +0200 | [diff] [blame] | 3443 | pm_runtime_get_noresume(&pdev->dev); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3444 | pm_runtime_set_active(&pdev->dev); |
| 3445 | pm_runtime_enable(&pdev->dev); |
| 3446 | |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3447 | ret = fec_reset_phy(pdev); |
| 3448 | if (ret) |
| 3449 | goto failed_reset; |
Fabio Estevam | e2f8d55 | 2013-02-22 06:40:45 +0000 | [diff] [blame] | 3450 | |
Fabio Estevam | 7f7d6c2 | 2013-02-21 09:21:50 +0000 | [diff] [blame] | 3451 | if (fep->bufdesc_ex) |
Fabio Estevam | ca162a8 | 2013-06-07 10:48:00 +0000 | [diff] [blame] | 3452 | fec_ptp_init(pdev); |
Fabio Estevam | 7f7d6c2 | 2013-02-21 09:21:50 +0000 | [diff] [blame] | 3453 | |
| 3454 | ret = fec_enet_init(ndev); |
| 3455 | if (ret) |
| 3456 | goto failed_init; |
| 3457 | |
Xiao Jiang | c7c83d1 | 2011-09-29 02:15:56 +0000 | [diff] [blame] | 3458 | for (i = 0; i < FEC_IRQ_NUM; i++) { |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3459 | irq = platform_get_irq(pdev, i); |
Lothar Waßmann | 86f9f2c | 2011-12-07 21:59:28 +0000 | [diff] [blame] | 3460 | if (irq < 0) { |
| 3461 | if (i) |
| 3462 | break; |
| 3463 | ret = irq; |
| 3464 | goto failed_irq; |
| 3465 | } |
Fabio Estevam | 0d9b2ab | 2013-07-21 13:25:04 -0300 | [diff] [blame] | 3466 | ret = devm_request_irq(&pdev->dev, irq, fec_enet_interrupt, |
Michael Opdenacker | 44a272d | 2013-09-13 05:44:38 +0200 | [diff] [blame] | 3467 | 0, pdev->name, ndev); |
Fabio Estevam | 0d9b2ab | 2013-07-21 13:25:04 -0300 | [diff] [blame] | 3468 | if (ret) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3469 | goto failed_irq; |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3470 | |
| 3471 | fep->irq[i] = irq; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3472 | } |
| 3473 | |
Fugang Duan | b4d39b5 | 2014-09-13 05:00:55 +0800 | [diff] [blame] | 3474 | init_completion(&fep->mdio_done); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 3475 | ret = fec_enet_mii_init(pdev); |
| 3476 | if (ret) |
| 3477 | goto failed_mii_init; |
| 3478 | |
Oskar Schirmer | 03c698c | 2010-10-07 02:30:30 +0000 | [diff] [blame] | 3479 | /* Carrier starts down, phylib will bring it up */ |
| 3480 | netif_carrier_off(ndev); |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 3481 | fec_enet_clk_enable(ndev, false); |
Nimrod Andy | 5bbde4d | 2014-05-27 15:51:08 +0800 | [diff] [blame] | 3482 | pinctrl_pm_select_sleep_state(&pdev->dev); |
Oskar Schirmer | 03c698c | 2010-10-07 02:30:30 +0000 | [diff] [blame] | 3483 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3484 | ret = register_netdev(ndev); |
| 3485 | if (ret) |
| 3486 | goto failed_register; |
| 3487 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3488 | device_init_wakeup(&ndev->dev, fep->wol_flag & |
| 3489 | FEC_WOL_HAS_MAGIC_PACKET); |
| 3490 | |
Fabio Estevam | eb1d064 | 2013-04-13 07:25:36 +0000 | [diff] [blame] | 3491 | if (fep->bufdesc_ex && fep->ptp_clock) |
| 3492 | netdev_info(ndev, "registered PHC device %d\n", fep->dev_id); |
| 3493 | |
Nimrod Andy | 1b7bde6 | 2014-09-30 09:28:05 +0800 | [diff] [blame] | 3494 | fep->rx_copybreak = COPYBREAK_DEFAULT; |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 3495 | INIT_WORK(&fep->tx_timeout_work, fec_enet_timeout_work); |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3496 | |
| 3497 | pm_runtime_mark_last_busy(&pdev->dev); |
| 3498 | pm_runtime_put_autosuspend(&pdev->dev); |
| 3499 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3500 | return 0; |
| 3501 | |
| 3502 | failed_register: |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 3503 | fec_enet_mii_remove(fep); |
| 3504 | failed_mii_init: |
Fabio Estevam | 7a2bbd8 | 2013-05-27 03:48:30 +0000 | [diff] [blame] | 3505 | failed_irq: |
Fabio Estevam | 7a2bbd8 | 2013-05-27 03:48:30 +0000 | [diff] [blame] | 3506 | failed_init: |
Lucas Stach | 32cba57 | 2015-07-23 16:06:20 +0200 | [diff] [blame] | 3507 | fec_ptp_stop(pdev); |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 3508 | if (fep->reg_phy) |
| 3509 | regulator_disable(fep->reg_phy); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3510 | failed_reset: |
Andy Duan | 4c78f0c | 2019-05-23 01:55:28 +0000 | [diff] [blame] | 3511 | pm_runtime_put_noidle(&pdev->dev); |
Fugang Duan | 8c4e516 | 2017-04-11 19:13:06 +0800 | [diff] [blame] | 3512 | pm_runtime_disable(&pdev->dev); |
Shawn Guo | 5fa9c0f | 2012-06-27 03:45:21 +0000 | [diff] [blame] | 3513 | failed_regulator: |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3514 | failed_clk_ipg: |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 3515 | fec_enet_clk_enable(ndev, false); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3516 | failed_clk: |
Johan Hovold | 82005b1 | 2016-11-28 19:25:00 +0100 | [diff] [blame] | 3517 | if (of_phy_is_fixed_link(np)) |
| 3518 | of_phy_deregister_fixed_link(np); |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 3519 | failed_phy: |
| 3520 | of_node_put(phy_node); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3521 | failed_ioremap: |
| 3522 | free_netdev(ndev); |
| 3523 | |
| 3524 | return ret; |
| 3525 | } |
| 3526 | |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 3527 | static int |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3528 | fec_drv_remove(struct platform_device *pdev) |
| 3529 | { |
| 3530 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 3531 | struct fec_enet_private *fep = netdev_priv(ndev); |
Johan Hovold | 82005b1 | 2016-11-28 19:25:00 +0100 | [diff] [blame] | 3532 | struct device_node *np = pdev->dev.of_node; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3533 | |
Russell King | 36cdc74 | 2014-07-08 13:01:44 +0100 | [diff] [blame] | 3534 | cancel_work_sync(&fep->tx_timeout_work); |
Lucas Stach | 32cba57 | 2015-07-23 16:06:20 +0200 | [diff] [blame] | 3535 | fec_ptp_stop(pdev); |
Lothar Waßmann | e163cc9 | 2011-12-07 21:59:31 +0000 | [diff] [blame] | 3536 | unregister_netdev(ndev); |
Bryan Wu | e6b043d | 2010-03-31 02:10:44 +0000 | [diff] [blame] | 3537 | fec_enet_mii_remove(fep); |
Fabio Estevam | f6a4d60 | 2013-05-27 03:48:31 +0000 | [diff] [blame] | 3538 | if (fep->reg_phy) |
| 3539 | regulator_disable(fep->reg_phy); |
Florian Fainelli | c3860a3 | 2018-03-18 12:49:51 -0700 | [diff] [blame] | 3540 | pm_runtime_put(&pdev->dev); |
| 3541 | pm_runtime_disable(&pdev->dev); |
Johan Hovold | 82005b1 | 2016-11-28 19:25:00 +0100 | [diff] [blame] | 3542 | if (of_phy_is_fixed_link(np)) |
| 3543 | of_phy_deregister_fixed_link(np); |
Uwe Kleine-König | 407066f | 2014-08-11 17:35:33 +0200 | [diff] [blame] | 3544 | of_node_put(fep->phy_node); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3545 | free_netdev(ndev); |
Uwe Kleine-König | 28e2188 | 2011-01-13 21:44:18 +0100 | [diff] [blame] | 3546 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3547 | return 0; |
| 3548 | } |
| 3549 | |
Fabio Estevam | dd66d38 | 2014-07-24 18:24:01 -0300 | [diff] [blame] | 3550 | static int __maybe_unused fec_suspend(struct device *dev) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3551 | { |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 3552 | struct net_device *ndev = dev_get_drvdata(dev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3553 | struct fec_enet_private *fep = netdev_priv(ndev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3554 | |
Russell King | da1774e | 2014-07-08 12:39:57 +0100 | [diff] [blame] | 3555 | rtnl_lock(); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3556 | if (netif_running(ndev)) { |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3557 | if (fep->wol_flag & FEC_WOL_FLAG_ENABLE) |
| 3558 | fep->wol_flag |= FEC_WOL_FLAG_SLEEP_ON; |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 3559 | phy_stop(ndev->phydev); |
Russell King | 31a6de3 | 2014-07-08 12:40:23 +0100 | [diff] [blame] | 3560 | napi_disable(&fep->napi); |
| 3561 | netif_tx_lock_bh(ndev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3562 | netif_device_detach(ndev); |
Russell King | 31a6de3 | 2014-07-08 12:40:23 +0100 | [diff] [blame] | 3563 | netif_tx_unlock_bh(ndev); |
| 3564 | fec_stop(ndev); |
Nimrod Andy | f4c4a4e | 2014-11-03 13:26:50 +0800 | [diff] [blame] | 3565 | fec_enet_clk_enable(ndev, false); |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3566 | if (!(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) |
| 3567 | pinctrl_pm_select_sleep_state(&fep->pdev->dev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3568 | } |
Russell King | da1774e | 2014-07-08 12:39:57 +0100 | [diff] [blame] | 3569 | rtnl_unlock(); |
| 3570 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3571 | if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 3572 | regulator_disable(fep->reg_phy); |
| 3573 | |
Nimrod Andy | 858eeb7 | 2014-12-11 09:20:31 +0800 | [diff] [blame] | 3574 | /* SOC supply clock to phy, when clock is disabled, phy link down |
| 3575 | * SOC control phy regulator, when regulator is disabled, phy link down |
| 3576 | */ |
| 3577 | if (fep->clk_enet_out || fep->reg_phy) |
| 3578 | fep->link = 0; |
| 3579 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3580 | return 0; |
| 3581 | } |
| 3582 | |
Fabio Estevam | dd66d38 | 2014-07-24 18:24:01 -0300 | [diff] [blame] | 3583 | static int __maybe_unused fec_resume(struct device *dev) |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3584 | { |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 3585 | struct net_device *ndev = dev_get_drvdata(dev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3586 | struct fec_enet_private *fep = netdev_priv(ndev); |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3587 | struct fec_platform_data *pdata = fep->pdev->dev.platform_data; |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 3588 | int ret; |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3589 | int val; |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 3590 | |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3591 | if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) { |
Fabio Estevam | 238f7bc | 2013-05-27 03:48:33 +0000 | [diff] [blame] | 3592 | ret = regulator_enable(fep->reg_phy); |
| 3593 | if (ret) |
| 3594 | return ret; |
| 3595 | } |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3596 | |
Russell King | da1774e | 2014-07-08 12:39:57 +0100 | [diff] [blame] | 3597 | rtnl_lock(); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3598 | if (netif_running(ndev)) { |
Nimrod Andy | f4c4a4e | 2014-11-03 13:26:50 +0800 | [diff] [blame] | 3599 | ret = fec_enet_clk_enable(ndev, true); |
| 3600 | if (ret) { |
| 3601 | rtnl_unlock(); |
| 3602 | goto failed_clk; |
| 3603 | } |
Nimrod Andy | de40ed3 | 2014-12-24 17:30:39 +0800 | [diff] [blame] | 3604 | if (fep->wol_flag & FEC_WOL_FLAG_ENABLE) { |
| 3605 | if (pdata && pdata->sleep_mode_enable) |
| 3606 | pdata->sleep_mode_enable(false); |
| 3607 | val = readl(fep->hwp + FEC_ECNTRL); |
| 3608 | val &= ~(FEC_ECR_MAGICEN | FEC_ECR_SLEEP); |
| 3609 | writel(val, fep->hwp + FEC_ECNTRL); |
| 3610 | fep->wol_flag &= ~FEC_WOL_FLAG_SLEEP_ON; |
| 3611 | } else { |
| 3612 | pinctrl_pm_select_default_state(&fep->pdev->dev); |
| 3613 | } |
Russell King | ef83337 | 2014-07-08 12:40:43 +0100 | [diff] [blame] | 3614 | fec_restart(ndev); |
Russell King | 31a6de3 | 2014-07-08 12:40:23 +0100 | [diff] [blame] | 3615 | netif_tx_lock_bh(ndev); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3616 | netif_device_attach(ndev); |
Russell King | 6af42d4 | 2014-07-08 12:40:18 +0100 | [diff] [blame] | 3617 | netif_tx_unlock_bh(ndev); |
Russell King | 6af42d4 | 2014-07-08 12:40:18 +0100 | [diff] [blame] | 3618 | napi_enable(&fep->napi); |
Philippe Reynes | 45f5c32 | 2016-05-10 00:19:42 +0200 | [diff] [blame] | 3619 | phy_start(ndev->phydev); |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3620 | } |
Russell King | da1774e | 2014-07-08 12:39:57 +0100 | [diff] [blame] | 3621 | rtnl_unlock(); |
Uwe Kleine-König | 04e5216 | 2011-01-13 21:53:40 +0100 | [diff] [blame] | 3622 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3623 | return 0; |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 3624 | |
Nimrod Andy | e8fcfcd | 2014-05-20 13:22:51 +0800 | [diff] [blame] | 3625 | failed_clk: |
Fabio Estevam | 13a097b | 2013-07-21 13:25:02 -0300 | [diff] [blame] | 3626 | if (fep->reg_phy) |
| 3627 | regulator_disable(fep->reg_phy); |
| 3628 | return ret; |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3629 | } |
| 3630 | |
Andrew Lunn | 8fff755 | 2015-07-25 22:38:02 +0200 | [diff] [blame] | 3631 | static int __maybe_unused fec_runtime_suspend(struct device *dev) |
| 3632 | { |
| 3633 | struct net_device *ndev = dev_get_drvdata(dev); |
| 3634 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 3635 | |
| 3636 | clk_disable_unprepare(fep->clk_ipg); |
| 3637 | |
| 3638 | return 0; |
| 3639 | } |
| 3640 | |
| 3641 | static int __maybe_unused fec_runtime_resume(struct device *dev) |
| 3642 | { |
| 3643 | struct net_device *ndev = dev_get_drvdata(dev); |
| 3644 | struct fec_enet_private *fep = netdev_priv(ndev); |
| 3645 | |
| 3646 | return clk_prepare_enable(fep->clk_ipg); |
| 3647 | } |
| 3648 | |
| 3649 | static const struct dev_pm_ops fec_pm_ops = { |
| 3650 | SET_SYSTEM_SLEEP_PM_OPS(fec_suspend, fec_resume) |
| 3651 | SET_RUNTIME_PM_OPS(fec_runtime_suspend, fec_runtime_resume, NULL) |
| 3652 | }; |
Denis Kirjanov | 59d4289 | 2010-06-02 09:27:04 +0000 | [diff] [blame] | 3653 | |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3654 | static struct platform_driver fec_driver = { |
| 3655 | .driver = { |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 3656 | .name = DRIVER_NAME, |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 3657 | .pm = &fec_pm_ops, |
Shawn Guo | ca2cc33 | 2011-06-25 02:04:35 +0800 | [diff] [blame] | 3658 | .of_match_table = fec_dt_ids, |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3659 | }, |
Shawn Guo | b5680e0 | 2011-01-05 21:13:13 +0000 | [diff] [blame] | 3660 | .id_table = fec_devtype, |
Eric Benard | 87cad5c | 2010-06-18 04:19:54 +0000 | [diff] [blame] | 3661 | .probe = fec_probe, |
Bill Pemberton | 33897cc | 2012-12-03 09:23:58 -0500 | [diff] [blame] | 3662 | .remove = fec_drv_remove, |
Sascha Hauer | ead7318 | 2009-01-28 23:03:11 +0000 | [diff] [blame] | 3663 | }; |
| 3664 | |
Fabio Estevam | aaca237 | 2012-01-23 16:44:50 +0000 | [diff] [blame] | 3665 | module_platform_driver(fec_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3666 | |
Fabio Estevam | f8c0aca | 2013-07-20 16:20:36 -0300 | [diff] [blame] | 3667 | MODULE_ALIAS("platform:"DRIVER_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3668 | MODULE_LICENSE("GPL"); |