Aaro Koskinen | 6762098 | 2015-04-04 22:51:21 +0300 | [diff] [blame] | 1 | /* |
| 2 | * This file is based on code from OCTEON SDK by Cavium Networks. |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (c) 2003-2007 Cavium Networks |
| 5 | * |
| 6 | * This file is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License, Version 2, as |
| 8 | * published by the Free Software Foundation. |
Aaro Koskinen | 6762098 | 2015-04-04 22:51:21 +0300 | [diff] [blame] | 9 | */ |
| 10 | |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 11 | #include <linux/platform_device.h> |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 12 | #include <linux/kernel.h> |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/etherdevice.h> |
David Daney | f6ed1b3 | 2009-10-14 12:04:42 -0700 | [diff] [blame] | 16 | #include <linux/phy.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Imre Kaloz | dc890df | 2012-04-19 12:27:27 +0200 | [diff] [blame] | 18 | #include <linux/interrupt.h> |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 19 | #include <linux/of_net.h> |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 20 | |
| 21 | #include <net/dst.h> |
| 22 | |
| 23 | #include <asm/octeon/octeon.h> |
| 24 | |
| 25 | #include "ethernet-defines.h" |
David Daney | a620c16 | 2009-06-23 16:20:56 -0700 | [diff] [blame] | 26 | #include "octeon-ethernet.h" |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 27 | #include "ethernet-mem.h" |
| 28 | #include "ethernet-rx.h" |
| 29 | #include "ethernet-tx.h" |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 30 | #include "ethernet-mdio.h" |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 31 | #include "ethernet-util.h" |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 32 | |
David Daney | af86649 | 2011-11-22 14:47:00 +0000 | [diff] [blame] | 33 | #include <asm/octeon/cvmx-pip.h> |
| 34 | #include <asm/octeon/cvmx-pko.h> |
| 35 | #include <asm/octeon/cvmx-fau.h> |
| 36 | #include <asm/octeon/cvmx-ipd.h> |
| 37 | #include <asm/octeon/cvmx-helper.h> |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 38 | |
David Daney | af86649 | 2011-11-22 14:47:00 +0000 | [diff] [blame] | 39 | #include <asm/octeon/cvmx-gmxx-defs.h> |
| 40 | #include <asm/octeon/cvmx-smix-defs.h> |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 41 | |
Aaro Koskinen | 9041961 | 2014-03-02 00:09:06 +0200 | [diff] [blame] | 42 | static int num_packet_buffers = 1024; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 43 | module_param(num_packet_buffers, int, 0444); |
| 44 | MODULE_PARM_DESC(num_packet_buffers, "\n" |
| 45 | "\tNumber of packet buffers to allocate and store in the\n" |
Aaro Koskinen | 5ff8bebb | 2014-03-02 00:09:05 +0200 | [diff] [blame] | 46 | "\tFPA. By default, 1024 packet buffers are used.\n"); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 47 | |
| 48 | int pow_receive_group = 15; |
| 49 | module_param(pow_receive_group, int, 0444); |
| 50 | MODULE_PARM_DESC(pow_receive_group, "\n" |
| 51 | "\tPOW group to receive packets from. All ethernet hardware\n" |
Jorrit Schippers | d82603c | 2012-12-27 17:33:02 +0100 | [diff] [blame] | 52 | "\twill be configured to send incoming packets to this POW\n" |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 53 | "\tgroup. Also any other software can submit packets to this\n" |
| 54 | "\tgroup for the kernel to process."); |
| 55 | |
| 56 | int pow_send_group = -1; |
| 57 | module_param(pow_send_group, int, 0644); |
| 58 | MODULE_PARM_DESC(pow_send_group, "\n" |
| 59 | "\tPOW group to send packets to other software on. This\n" |
| 60 | "\tcontrols the creation of the virtual device pow0.\n" |
| 61 | "\talways_use_pow also depends on this value."); |
| 62 | |
| 63 | int always_use_pow; |
| 64 | module_param(always_use_pow, int, 0444); |
| 65 | MODULE_PARM_DESC(always_use_pow, "\n" |
| 66 | "\tWhen set, always send to the pow group. This will cause\n" |
| 67 | "\tpackets sent to real ethernet devices to be sent to the\n" |
| 68 | "\tPOW group instead of the hardware. Unless some other\n" |
| 69 | "\tapplication changes the config, packets will still be\n" |
| 70 | "\treceived from the low level hardware. Use this option\n" |
| 71 | "\tto allow a CVMX app to intercept all packets from the\n" |
| 72 | "\tlinux kernel. You must specify pow_send_group along with\n" |
| 73 | "\tthis option."); |
| 74 | |
| 75 | char pow_send_list[128] = ""; |
| 76 | module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444); |
| 77 | MODULE_PARM_DESC(pow_send_list, "\n" |
| 78 | "\tComma separated list of ethernet devices that should use the\n" |
| 79 | "\tPOW for transmit instead of the actual ethernet hardware. This\n" |
| 80 | "\tis a per port version of always_use_pow. always_use_pow takes\n" |
| 81 | "\tprecedence over this list. For example, setting this to\n" |
| 82 | "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n" |
| 83 | "\tusing the pow_send_group."); |
| 84 | |
David Daney | 3368c78 | 2010-01-07 11:05:04 -0800 | [diff] [blame] | 85 | int rx_napi_weight = 32; |
| 86 | module_param(rx_napi_weight, int, 0444); |
| 87 | MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter."); |
David Daney | 13c5939 | 2009-10-12 12:04:32 -0700 | [diff] [blame] | 88 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 89 | /** |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 90 | * cvm_oct_poll_queue - Workqueue for polling operations. |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 91 | */ |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 92 | struct workqueue_struct *cvm_oct_poll_queue; |
| 93 | |
| 94 | /** |
| 95 | * cvm_oct_poll_queue_stopping - flag to indicate polling should stop. |
| 96 | * |
| 97 | * Set to one right before cvm_oct_poll_queue is destroyed. |
| 98 | */ |
| 99 | atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 100 | |
| 101 | /** |
| 102 | * Array of every ethernet device owned by this driver indexed by |
| 103 | * the ipd input port number. |
| 104 | */ |
| 105 | struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS]; |
| 106 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 107 | u64 cvm_oct_tx_poll_interval; |
| 108 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 109 | static void cvm_oct_rx_refill_worker(struct work_struct *work); |
| 110 | static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker); |
| 111 | |
| 112 | static void cvm_oct_rx_refill_worker(struct work_struct *work) |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 113 | { |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 114 | /* |
| 115 | * FPA 0 may have been drained, try to refill it if we need |
| 116 | * more than num_packet_buffers / 2, otherwise normal receive |
| 117 | * processing will refill it. If it were drained, no packets |
| 118 | * could be received so cvm_oct_napi_poll would never be |
| 119 | * invoked to do the refill. |
| 120 | */ |
| 121 | cvm_oct_rx_refill_pool(num_packet_buffers / 2); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 122 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 123 | if (!atomic_read(&cvm_oct_poll_queue_stopping)) |
| 124 | queue_delayed_work(cvm_oct_poll_queue, |
| 125 | &cvm_oct_rx_refill_work, HZ); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 126 | } |
| 127 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 128 | static void cvm_oct_periodic_worker(struct work_struct *work) |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 129 | { |
| 130 | struct octeon_ethernet *priv = container_of(work, |
| 131 | struct octeon_ethernet, |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 132 | port_periodic_work.work); |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 133 | |
| 134 | if (priv->poll) |
| 135 | priv->poll(cvm_oct_device[priv->port]); |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 136 | |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 137 | cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats( |
| 138 | cvm_oct_device[priv->port]); |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 139 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 140 | if (!atomic_read(&cvm_oct_poll_queue_stopping)) |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 141 | queue_delayed_work(cvm_oct_poll_queue, |
| 142 | &priv->port_periodic_work, HZ); |
Nandini Hanumanthagowda | 851ec8c | 2013-10-13 20:19:50 +0530 | [diff] [blame] | 143 | } |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 144 | |
Bill Pemberton | 4f24090 | 2012-11-19 13:22:06 -0500 | [diff] [blame] | 145 | static void cvm_oct_configure_common_hw(void) |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 146 | { |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 147 | /* Setup the FPA */ |
| 148 | cvmx_fpa_enable(); |
| 149 | cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, |
| 150 | num_packet_buffers); |
| 151 | cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, |
| 152 | num_packet_buffers); |
| 153 | if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) |
| 154 | cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, |
Janne Huttunen | d5f9bc7 | 2015-08-13 16:21:41 +0300 | [diff] [blame] | 155 | CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 1024); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 156 | |
Paul Martin | 8a5cc92 | 2015-03-30 17:00:59 +0100 | [diff] [blame] | 157 | #ifdef __LITTLE_ENDIAN |
| 158 | { |
| 159 | union cvmx_ipd_ctl_status ipd_ctl_status; |
Kevin Darbyshire-Bryant | 4bc8ff7 | 2015-07-25 10:48:28 +0100 | [diff] [blame] | 160 | |
Paul Martin | 8a5cc92 | 2015-03-30 17:00:59 +0100 | [diff] [blame] | 161 | ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); |
| 162 | ipd_ctl_status.s.pkt_lend = 1; |
| 163 | ipd_ctl_status.s.wqe_lend = 1; |
| 164 | cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64); |
| 165 | } |
| 166 | #endif |
| 167 | |
Aaro Koskinen | cccdb27 | 2015-04-04 22:51:18 +0300 | [diff] [blame] | 168 | cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 172 | * cvm_oct_free_work- Free a work queue entry |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 173 | * |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 174 | * @work_queue_entry: Work queue entry to free |
| 175 | * |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 176 | * Returns Zero on success, Negative on failure. |
| 177 | */ |
| 178 | int cvm_oct_free_work(void *work_queue_entry) |
| 179 | { |
| 180 | cvmx_wqe_t *work = work_queue_entry; |
| 181 | |
| 182 | int segments = work->word2.s.bufs; |
| 183 | union cvmx_buf_ptr segment_ptr = work->packet_ptr; |
| 184 | |
| 185 | while (segments--) { |
| 186 | union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *) |
| 187 | cvmx_phys_to_ptr(segment_ptr.s.addr - 8); |
| 188 | if (unlikely(!segment_ptr.s.i)) |
| 189 | cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr), |
| 190 | segment_ptr.s.pool, |
Aaro Koskinen | c93b0e7 | 2015-04-04 22:51:19 +0300 | [diff] [blame] | 191 | CVMX_FPA_PACKET_POOL_SIZE / 128); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 192 | segment_ptr = next_ptr; |
| 193 | } |
Aaro Koskinen | c93b0e7 | 2015-04-04 22:51:19 +0300 | [diff] [blame] | 194 | cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | EXPORT_SYMBOL(cvm_oct_free_work); |
| 199 | |
| 200 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 201 | * cvm_oct_common_get_stats - get the low level ethernet statistics |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 202 | * @dev: Device to get the statistics from |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 203 | * |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 204 | * Returns Pointer to the statistics |
| 205 | */ |
| 206 | static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) |
| 207 | { |
| 208 | cvmx_pip_port_status_t rx_status; |
| 209 | cvmx_pko_port_status_t tx_status; |
| 210 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 211 | |
| 212 | if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) { |
| 213 | if (octeon_is_simulation()) { |
| 214 | /* The simulator doesn't support statistics */ |
| 215 | memset(&rx_status, 0, sizeof(rx_status)); |
| 216 | memset(&tx_status, 0, sizeof(tx_status)); |
| 217 | } else { |
| 218 | cvmx_pip_get_port_status(priv->port, 1, &rx_status); |
| 219 | cvmx_pko_get_port_status(priv->port, 1, &tx_status); |
| 220 | } |
| 221 | |
| 222 | priv->stats.rx_packets += rx_status.inb_packets; |
| 223 | priv->stats.tx_packets += tx_status.packets; |
| 224 | priv->stats.rx_bytes += rx_status.inb_octets; |
| 225 | priv->stats.tx_bytes += tx_status.octets; |
| 226 | priv->stats.multicast += rx_status.multicast_packets; |
| 227 | priv->stats.rx_crc_errors += rx_status.inb_errors; |
| 228 | priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets; |
| 229 | |
| 230 | /* |
| 231 | * The drop counter must be incremented atomically |
| 232 | * since the RX tasklet also increments it. |
| 233 | */ |
| 234 | #ifdef CONFIG_64BIT |
| 235 | atomic64_add(rx_status.dropped_packets, |
| 236 | (atomic64_t *)&priv->stats.rx_dropped); |
| 237 | #else |
| 238 | atomic_add(rx_status.dropped_packets, |
| 239 | (atomic_t *)&priv->stats.rx_dropped); |
| 240 | #endif |
| 241 | } |
| 242 | |
| 243 | return &priv->stats; |
| 244 | } |
| 245 | |
| 246 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 247 | * cvm_oct_common_change_mtu - change the link MTU |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 248 | * @dev: Device to change |
| 249 | * @new_mtu: The new MTU |
| 250 | * |
| 251 | * Returns Zero on success |
| 252 | */ |
| 253 | static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) |
| 254 | { |
| 255 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 256 | int interface = INTERFACE(priv->port); |
| 257 | int index = INDEX(priv->port); |
| 258 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) |
| 259 | int vlan_bytes = 4; |
| 260 | #else |
| 261 | int vlan_bytes = 0; |
| 262 | #endif |
| 263 | |
| 264 | /* |
| 265 | * Limit the MTU to make sure the ethernet packets are between |
| 266 | * 64 bytes and 65535 bytes. |
| 267 | */ |
| 268 | if ((new_mtu + 14 + 4 + vlan_bytes < 64) |
| 269 | || (new_mtu + 14 + 4 + vlan_bytes > 65392)) { |
| 270 | pr_err("MTU must be between %d and %d.\n", |
| 271 | 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes); |
| 272 | return -EINVAL; |
| 273 | } |
| 274 | dev->mtu = new_mtu; |
| 275 | |
| 276 | if ((interface < 2) |
| 277 | && (cvmx_helper_interface_get_mode(interface) != |
| 278 | CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| 279 | /* Add ethernet header and FCS, and VLAN if configured. */ |
| 280 | int max_packet = new_mtu + 14 + 4 + vlan_bytes; |
| 281 | |
| 282 | if (OCTEON_IS_MODEL(OCTEON_CN3XXX) |
| 283 | || OCTEON_IS_MODEL(OCTEON_CN58XX)) { |
| 284 | /* Signal errors on packets larger than the MTU */ |
| 285 | cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface), |
| 286 | max_packet); |
| 287 | } else { |
| 288 | /* |
| 289 | * Set the hardware to truncate packets larger |
| 290 | * than the MTU and smaller the 64 bytes. |
| 291 | */ |
| 292 | union cvmx_pip_frm_len_chkx frm_len_chk; |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 293 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 294 | frm_len_chk.u64 = 0; |
| 295 | frm_len_chk.s.minlen = 64; |
| 296 | frm_len_chk.s.maxlen = max_packet; |
| 297 | cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface), |
| 298 | frm_len_chk.u64); |
| 299 | } |
| 300 | /* |
| 301 | * Set the hardware to truncate packets larger than |
| 302 | * the MTU. The jabber register must be set to a |
| 303 | * multiple of 8 bytes, so round up. |
| 304 | */ |
| 305 | cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface), |
| 306 | (max_packet + 7) & ~7u); |
| 307 | } |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 312 | * cvm_oct_common_set_multicast_list - set the multicast list |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 313 | * @dev: Device to work on |
| 314 | */ |
| 315 | static void cvm_oct_common_set_multicast_list(struct net_device *dev) |
| 316 | { |
| 317 | union cvmx_gmxx_prtx_cfg gmx_cfg; |
| 318 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 319 | int interface = INTERFACE(priv->port); |
| 320 | int index = INDEX(priv->port); |
| 321 | |
| 322 | if ((interface < 2) |
| 323 | && (cvmx_helper_interface_get_mode(interface) != |
| 324 | CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| 325 | union cvmx_gmxx_rxx_adr_ctl control; |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 326 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 327 | control.u64 = 0; |
| 328 | control.s.bcst = 1; /* Allow broadcast MAC addresses */ |
| 329 | |
Jiri Pirko | d590794 | 2010-02-18 05:10:14 +0000 | [diff] [blame] | 330 | if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) || |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 331 | (dev->flags & IFF_PROMISC)) |
| 332 | /* Force accept multicast packets */ |
| 333 | control.s.mcst = 2; |
| 334 | else |
Justin P. Mattock | 215c47c | 2012-03-26 21:34:18 -0700 | [diff] [blame] | 335 | /* Force reject multicast packets */ |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 336 | control.s.mcst = 1; |
| 337 | |
| 338 | if (dev->flags & IFF_PROMISC) |
| 339 | /* |
| 340 | * Reject matches if promisc. Since CAM is |
| 341 | * shut off, should accept everything. |
| 342 | */ |
| 343 | control.s.cam_mode = 0; |
| 344 | else |
| 345 | /* Filter packets based on the CAM */ |
| 346 | control.s.cam_mode = 1; |
| 347 | |
| 348 | gmx_cfg.u64 = |
| 349 | cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| 350 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| 351 | gmx_cfg.u64 & ~1ull); |
| 352 | |
| 353 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface), |
| 354 | control.u64); |
| 355 | if (dev->flags & IFF_PROMISC) |
| 356 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN |
| 357 | (index, interface), 0); |
| 358 | else |
| 359 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN |
| 360 | (index, interface), 1); |
| 361 | |
| 362 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| 363 | gmx_cfg.u64); |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 368 | * cvm_oct_common_set_mac_address - set the hardware MAC address for a device |
| 369 | * @dev: The device in question. |
| 370 | * @addr: Address structure to change it too. |
| 371 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 372 | * Returns Zero on success |
| 373 | */ |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 374 | static int cvm_oct_set_mac_filter(struct net_device *dev) |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 375 | { |
| 376 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 377 | union cvmx_gmxx_prtx_cfg gmx_cfg; |
| 378 | int interface = INTERFACE(priv->port); |
| 379 | int index = INDEX(priv->port); |
| 380 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 381 | if ((interface < 2) |
| 382 | && (cvmx_helper_interface_get_mode(interface) != |
| 383 | CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| 384 | int i; |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 385 | uint8_t *ptr = dev->dev_addr; |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 386 | uint64_t mac = 0; |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 387 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 388 | for (i = 0; i < 6; i++) |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 389 | mac = (mac << 8) | (uint64_t)ptr[i]; |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 390 | |
| 391 | gmx_cfg.u64 = |
| 392 | cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| 393 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| 394 | gmx_cfg.u64 & ~1ull); |
| 395 | |
| 396 | cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac); |
| 397 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 398 | ptr[0]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 399 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 400 | ptr[1]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 401 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 402 | ptr[2]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 403 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 404 | ptr[3]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 405 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 406 | ptr[4]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 407 | cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface), |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 408 | ptr[5]); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 409 | cvm_oct_common_set_multicast_list(dev); |
| 410 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| 411 | gmx_cfg.u64); |
| 412 | } |
| 413 | return 0; |
| 414 | } |
| 415 | |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 416 | static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) |
| 417 | { |
| 418 | int r = eth_mac_addr(dev, addr); |
| 419 | |
| 420 | if (r) |
| 421 | return r; |
| 422 | return cvm_oct_set_mac_filter(dev); |
| 423 | } |
| 424 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 425 | /** |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 426 | * cvm_oct_common_init - per network device initialization |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 427 | * @dev: Device to initialize |
David Daney | ec977c5 | 2010-02-16 17:25:32 -0800 | [diff] [blame] | 428 | * |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 429 | * Returns Zero on success |
| 430 | */ |
| 431 | int cvm_oct_common_init(struct net_device *dev) |
| 432 | { |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 433 | struct octeon_ethernet *priv = netdev_priv(dev); |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 434 | const u8 *mac = NULL; |
David Daney | 13c5939 | 2009-10-12 12:04:32 -0700 | [diff] [blame] | 435 | |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 436 | if (priv->of_node) |
| 437 | mac = of_get_mac_address(priv->of_node); |
David Daney | 13c5939 | 2009-10-12 12:04:32 -0700 | [diff] [blame] | 438 | |
Luka Perkov | 4d97845 | 2013-10-29 02:24:34 +0100 | [diff] [blame] | 439 | if (mac) |
Dilek Uzulmez | 6c71ea5 | 2014-10-07 15:58:48 +0300 | [diff] [blame] | 440 | ether_addr_copy(dev->dev_addr, mac); |
Jiri Pirko | 15c6ff3 | 2013-01-01 03:30:17 +0000 | [diff] [blame] | 441 | else |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 442 | eth_hw_addr_random(dev); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 443 | |
| 444 | /* |
| 445 | * Force the interface to use the POW send if always_use_pow |
| 446 | * was specified or it is in the pow send list. |
| 447 | */ |
| 448 | if ((pow_send_group != -1) |
| 449 | && (always_use_pow || strstr(pow_send_list, dev->name))) |
| 450 | priv->queue = -1; |
| 451 | |
Aaro Koskinen | 6646baf | 2015-04-04 22:51:16 +0300 | [diff] [blame] | 452 | if (priv->queue != -1) |
| 453 | dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 454 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 455 | /* We do our own locking, Linux doesn't need to */ |
| 456 | dev->features |= NETIF_F_LLTX; |
Wilfried Klaebe | 7ad24ea | 2014-05-11 00:12:32 +0000 | [diff] [blame] | 457 | dev->ethtool_ops = &cvm_oct_ethtool_ops; |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 458 | |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 459 | cvm_oct_set_mac_filter(dev); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 460 | dev->netdev_ops->ndo_change_mtu(dev, dev->mtu); |
| 461 | |
| 462 | /* |
| 463 | * Zero out stats for port so we won't mistakenly show |
| 464 | * counters from the bootloader. |
| 465 | */ |
| 466 | memset(dev->netdev_ops->ndo_get_stats(dev), 0, |
| 467 | sizeof(struct net_device_stats)); |
| 468 | |
Aaro Koskinen | be76400 | 2015-04-04 22:51:04 +0300 | [diff] [blame] | 469 | if (dev->netdev_ops->ndo_stop) |
| 470 | dev->netdev_ops->ndo_stop(dev); |
| 471 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | void cvm_oct_common_uninit(struct net_device *dev) |
| 476 | { |
David Daney | f6ed1b3 | 2009-10-14 12:04:42 -0700 | [diff] [blame] | 477 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 478 | |
| 479 | if (priv->phydev) |
| 480 | phy_disconnect(priv->phydev); |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 481 | } |
| 482 | |
Aaro Koskinen | 9e3ae4f | 2015-04-04 22:51:02 +0300 | [diff] [blame] | 483 | int cvm_oct_common_open(struct net_device *dev, |
| 484 | void (*link_poll)(struct net_device *), bool poll_now) |
| 485 | { |
| 486 | union cvmx_gmxx_prtx_cfg gmx_cfg; |
| 487 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 488 | int interface = INTERFACE(priv->port); |
| 489 | int index = INDEX(priv->port); |
| 490 | cvmx_helper_link_info_t link_info; |
| 491 | int rv; |
| 492 | |
| 493 | rv = cvm_oct_phy_setup_device(dev); |
| 494 | if (rv) |
| 495 | return rv; |
| 496 | |
| 497 | gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| 498 | gmx_cfg.s.en = 1; |
| 499 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); |
| 500 | |
| 501 | if (octeon_is_simulation()) |
| 502 | return 0; |
| 503 | |
| 504 | if (priv->phydev) { |
| 505 | int r = phy_read_status(priv->phydev); |
| 506 | |
| 507 | if (r == 0 && priv->phydev->link == 0) |
| 508 | netif_carrier_off(dev); |
| 509 | cvm_oct_adjust_link(dev); |
| 510 | } else { |
| 511 | link_info = cvmx_helper_link_get(priv->port); |
| 512 | if (!link_info.s.link_up) |
| 513 | netif_carrier_off(dev); |
| 514 | priv->poll = link_poll; |
| 515 | if (poll_now) |
| 516 | link_poll(dev); |
| 517 | } |
| 518 | |
| 519 | return 0; |
| 520 | } |
| 521 | |
Aaro Koskinen | a8d2e81 | 2015-04-04 22:51:08 +0300 | [diff] [blame] | 522 | void cvm_oct_link_poll(struct net_device *dev) |
| 523 | { |
| 524 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 525 | cvmx_helper_link_info_t link_info; |
| 526 | |
| 527 | link_info = cvmx_helper_link_get(priv->port); |
| 528 | if (link_info.u64 == priv->link_info) |
| 529 | return; |
| 530 | |
| 531 | link_info = cvmx_helper_link_autoconf(priv->port); |
| 532 | priv->link_info = link_info.u64; |
| 533 | |
| 534 | if (link_info.s.link_up) { |
| 535 | if (!netif_carrier_ok(dev)) |
| 536 | netif_carrier_on(dev); |
| 537 | } else if (netif_carrier_ok(dev)) { |
| 538 | netif_carrier_off(dev); |
| 539 | } |
| 540 | cvm_oct_note_carrier(priv, link_info); |
| 541 | } |
| 542 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 543 | static const struct net_device_ops cvm_oct_npi_netdev_ops = { |
| 544 | .ndo_init = cvm_oct_common_init, |
| 545 | .ndo_uninit = cvm_oct_common_uninit, |
| 546 | .ndo_start_xmit = cvm_oct_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 547 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 548 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 549 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 550 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 551 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 552 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 553 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 554 | #endif |
| 555 | }; |
| 556 | static const struct net_device_ops cvm_oct_xaui_netdev_ops = { |
| 557 | .ndo_init = cvm_oct_xaui_init, |
Aaro Koskinen | 3c33914 | 2015-04-04 22:51:05 +0300 | [diff] [blame] | 558 | .ndo_uninit = cvm_oct_common_uninit, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 559 | .ndo_open = cvm_oct_xaui_open, |
Aaro Koskinen | 96217eb | 2015-04-04 22:51:03 +0300 | [diff] [blame] | 560 | .ndo_stop = cvm_oct_common_stop, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 561 | .ndo_start_xmit = cvm_oct_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 562 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 563 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 564 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 565 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 566 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 567 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 568 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 569 | #endif |
| 570 | }; |
| 571 | static const struct net_device_ops cvm_oct_sgmii_netdev_ops = { |
| 572 | .ndo_init = cvm_oct_sgmii_init, |
Aaro Koskinen | 3c33914 | 2015-04-04 22:51:05 +0300 | [diff] [blame] | 573 | .ndo_uninit = cvm_oct_common_uninit, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 574 | .ndo_open = cvm_oct_sgmii_open, |
Aaro Koskinen | 96217eb | 2015-04-04 22:51:03 +0300 | [diff] [blame] | 575 | .ndo_stop = cvm_oct_common_stop, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 576 | .ndo_start_xmit = cvm_oct_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 577 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 578 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 579 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 580 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 581 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 582 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 583 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 584 | #endif |
| 585 | }; |
| 586 | static const struct net_device_ops cvm_oct_spi_netdev_ops = { |
| 587 | .ndo_init = cvm_oct_spi_init, |
| 588 | .ndo_uninit = cvm_oct_spi_uninit, |
| 589 | .ndo_start_xmit = cvm_oct_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 590 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 591 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 592 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 593 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 594 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 595 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 596 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 597 | #endif |
| 598 | }; |
| 599 | static const struct net_device_ops cvm_oct_rgmii_netdev_ops = { |
| 600 | .ndo_init = cvm_oct_rgmii_init, |
| 601 | .ndo_uninit = cvm_oct_rgmii_uninit, |
| 602 | .ndo_open = cvm_oct_rgmii_open, |
Aaro Koskinen | 96217eb | 2015-04-04 22:51:03 +0300 | [diff] [blame] | 603 | .ndo_stop = cvm_oct_common_stop, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 604 | .ndo_start_xmit = cvm_oct_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 605 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 606 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 607 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 608 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 609 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 610 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 611 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 612 | #endif |
| 613 | }; |
| 614 | static const struct net_device_ops cvm_oct_pow_netdev_ops = { |
| 615 | .ndo_init = cvm_oct_common_init, |
| 616 | .ndo_start_xmit = cvm_oct_xmit_pow, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 617 | .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 618 | .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| 619 | .ndo_do_ioctl = cvm_oct_ioctl, |
| 620 | .ndo_change_mtu = cvm_oct_common_change_mtu, |
| 621 | .ndo_get_stats = cvm_oct_common_get_stats, |
| 622 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 623 | .ndo_poll_controller = cvm_oct_poll_controller, |
| 624 | #endif |
| 625 | }; |
| 626 | |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 627 | static struct device_node *cvm_oct_of_get_child( |
| 628 | const struct device_node *parent, int reg_val) |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 629 | { |
| 630 | struct device_node *node = NULL; |
| 631 | int size; |
| 632 | const __be32 *addr; |
| 633 | |
| 634 | for (;;) { |
| 635 | node = of_get_next_child(parent, node); |
| 636 | if (!node) |
| 637 | break; |
| 638 | addr = of_get_property(node, "reg", &size); |
| 639 | if (addr && (be32_to_cpu(*addr) == reg_val)) |
| 640 | break; |
| 641 | } |
| 642 | return node; |
| 643 | } |
| 644 | |
Bill Pemberton | 4f24090 | 2012-11-19 13:22:06 -0500 | [diff] [blame] | 645 | static struct device_node *cvm_oct_node_for_port(struct device_node *pip, |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 646 | int interface, int port) |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 647 | { |
| 648 | struct device_node *ni, *np; |
| 649 | |
| 650 | ni = cvm_oct_of_get_child(pip, interface); |
| 651 | if (!ni) |
| 652 | return NULL; |
| 653 | |
| 654 | np = cvm_oct_of_get_child(ni, port); |
| 655 | of_node_put(ni); |
| 656 | |
| 657 | return np; |
| 658 | } |
| 659 | |
Bill Pemberton | 4f24090 | 2012-11-19 13:22:06 -0500 | [diff] [blame] | 660 | static int cvm_oct_probe(struct platform_device *pdev) |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 661 | { |
| 662 | int num_interfaces; |
| 663 | int interface; |
| 664 | int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE; |
| 665 | int qos; |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 666 | struct device_node *pip; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 667 | |
David Daney | f6ed1b3 | 2009-10-14 12:04:42 -0700 | [diff] [blame] | 668 | octeon_mdiobus_force_mod_depencency(); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 669 | |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 670 | pip = pdev->dev.of_node; |
| 671 | if (!pip) { |
| 672 | pr_err("Error: No 'pip' in /aliases\n"); |
| 673 | return -EINVAL; |
| 674 | } |
David Daney | 13c5939 | 2009-10-12 12:04:32 -0700 | [diff] [blame] | 675 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 676 | cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet"); |
| 677 | if (cvm_oct_poll_queue == NULL) { |
| 678 | pr_err("octeon-ethernet: Cannot create workqueue"); |
| 679 | return -ENOMEM; |
| 680 | } |
| 681 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 682 | cvm_oct_configure_common_hw(); |
| 683 | |
| 684 | cvmx_helper_initialize_packet_io_global(); |
| 685 | |
| 686 | /* Change the input group for all ports before input is enabled */ |
| 687 | num_interfaces = cvmx_helper_get_number_of_interfaces(); |
| 688 | for (interface = 0; interface < num_interfaces; interface++) { |
| 689 | int num_ports = cvmx_helper_ports_on_interface(interface); |
| 690 | int port; |
| 691 | |
| 692 | for (port = cvmx_helper_get_ipd_port(interface, 0); |
| 693 | port < cvmx_helper_get_ipd_port(interface, num_ports); |
| 694 | port++) { |
| 695 | union cvmx_pip_prt_tagx pip_prt_tagx; |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 696 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 697 | pip_prt_tagx.u64 = |
| 698 | cvmx_read_csr(CVMX_PIP_PRT_TAGX(port)); |
| 699 | pip_prt_tagx.s.grp = pow_receive_group; |
| 700 | cvmx_write_csr(CVMX_PIP_PRT_TAGX(port), |
| 701 | pip_prt_tagx.u64); |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | cvmx_helper_ipd_and_packet_input_enable(); |
| 706 | |
| 707 | memset(cvm_oct_device, 0, sizeof(cvm_oct_device)); |
| 708 | |
| 709 | /* |
| 710 | * Initialize the FAU used for counting packet buffers that |
| 711 | * need to be freed. |
| 712 | */ |
| 713 | cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); |
| 714 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 715 | /* Initialize the FAU used for counting tx SKBs that need to be freed */ |
| 716 | cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0); |
| 717 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 718 | if ((pow_send_group != -1)) { |
| 719 | struct net_device *dev; |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 720 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 721 | pr_info("\tConfiguring device for POW only access\n"); |
| 722 | dev = alloc_etherdev(sizeof(struct octeon_ethernet)); |
| 723 | if (dev) { |
| 724 | /* Initialize the device private structure. */ |
| 725 | struct octeon_ethernet *priv = netdev_priv(dev); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 726 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 727 | dev->netdev_ops = &cvm_oct_pow_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 728 | priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED; |
| 729 | priv->port = CVMX_PIP_NUM_INPUT_PORTS; |
| 730 | priv->queue = -1; |
| 731 | strcpy(dev->name, "pow%d"); |
| 732 | for (qos = 0; qos < 16; qos++) |
| 733 | skb_queue_head_init(&priv->tx_free_list[qos]); |
| 734 | |
| 735 | if (register_netdev(dev) < 0) { |
David Daney | 6568a23 | 2010-01-07 11:05:01 -0800 | [diff] [blame] | 736 | pr_err("Failed to register ethernet device for POW\n"); |
Vasiliy Kulikov | c4711c3 | 2010-09-28 21:08:01 +0400 | [diff] [blame] | 737 | free_netdev(dev); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 738 | } else { |
| 739 | cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev; |
David Daney | 6568a23 | 2010-01-07 11:05:01 -0800 | [diff] [blame] | 740 | pr_info("%s: POW send group %d, receive group %d\n", |
| 741 | dev->name, pow_send_group, |
| 742 | pow_receive_group); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 743 | } |
| 744 | } else { |
David Daney | 6568a23 | 2010-01-07 11:05:01 -0800 | [diff] [blame] | 745 | pr_err("Failed to allocate ethernet device for POW\n"); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 746 | } |
| 747 | } |
| 748 | |
| 749 | num_interfaces = cvmx_helper_get_number_of_interfaces(); |
| 750 | for (interface = 0; interface < num_interfaces; interface++) { |
| 751 | cvmx_helper_interface_mode_t imode = |
| 752 | cvmx_helper_interface_get_mode(interface); |
| 753 | int num_ports = cvmx_helper_ports_on_interface(interface); |
| 754 | int port; |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 755 | int port_index; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 756 | |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 757 | for (port_index = 0, |
| 758 | port = cvmx_helper_get_ipd_port(interface, 0); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 759 | port < cvmx_helper_get_ipd_port(interface, num_ports); |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 760 | port_index++, port++) { |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 761 | struct octeon_ethernet *priv; |
| 762 | struct net_device *dev = |
| 763 | alloc_etherdev(sizeof(struct octeon_ethernet)); |
| 764 | if (!dev) { |
Esra Altintas | 99f8dbc | 2014-09-27 13:49:02 +0300 | [diff] [blame] | 765 | pr_err("Failed to allocate ethernet device for port %d\n", |
| 766 | port); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 767 | continue; |
| 768 | } |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 769 | |
| 770 | /* Initialize the device private structure. */ |
| 771 | priv = netdev_priv(dev); |
David Daney | ec3a220 | 2014-05-29 11:10:02 +0100 | [diff] [blame] | 772 | priv->netdev = dev; |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 773 | priv->of_node = cvm_oct_node_for_port(pip, interface, |
| 774 | port_index); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 775 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 776 | INIT_DELAYED_WORK(&priv->port_periodic_work, |
| 777 | cvm_oct_periodic_worker); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 778 | priv->imode = imode; |
| 779 | priv->port = port; |
| 780 | priv->queue = cvmx_pko_get_base_queue(priv->port); |
| 781 | priv->fau = fau - cvmx_pko_get_num_queues(port) * 4; |
| 782 | for (qos = 0; qos < 16; qos++) |
| 783 | skb_queue_head_init(&priv->tx_free_list[qos]); |
| 784 | for (qos = 0; qos < cvmx_pko_get_num_queues(port); |
| 785 | qos++) |
| 786 | cvmx_fau_atomic_write32(priv->fau + qos * 4, 0); |
| 787 | |
| 788 | switch (priv->imode) { |
| 789 | |
| 790 | /* These types don't support ports to IPD/PKO */ |
| 791 | case CVMX_HELPER_INTERFACE_MODE_DISABLED: |
| 792 | case CVMX_HELPER_INTERFACE_MODE_PCIE: |
| 793 | case CVMX_HELPER_INTERFACE_MODE_PICMG: |
| 794 | break; |
| 795 | |
| 796 | case CVMX_HELPER_INTERFACE_MODE_NPI: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 797 | dev->netdev_ops = &cvm_oct_npi_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 798 | strcpy(dev->name, "npi%d"); |
| 799 | break; |
| 800 | |
| 801 | case CVMX_HELPER_INTERFACE_MODE_XAUI: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 802 | dev->netdev_ops = &cvm_oct_xaui_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 803 | strcpy(dev->name, "xaui%d"); |
| 804 | break; |
| 805 | |
| 806 | case CVMX_HELPER_INTERFACE_MODE_LOOP: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 807 | dev->netdev_ops = &cvm_oct_npi_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 808 | strcpy(dev->name, "loop%d"); |
| 809 | break; |
| 810 | |
| 811 | case CVMX_HELPER_INTERFACE_MODE_SGMII: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 812 | dev->netdev_ops = &cvm_oct_sgmii_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 813 | strcpy(dev->name, "eth%d"); |
| 814 | break; |
| 815 | |
| 816 | case CVMX_HELPER_INTERFACE_MODE_SPI: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 817 | dev->netdev_ops = &cvm_oct_spi_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 818 | strcpy(dev->name, "spi%d"); |
| 819 | break; |
| 820 | |
| 821 | case CVMX_HELPER_INTERFACE_MODE_RGMII: |
| 822 | case CVMX_HELPER_INTERFACE_MODE_GMII: |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 823 | dev->netdev_ops = &cvm_oct_rgmii_netdev_ops; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 824 | strcpy(dev->name, "eth%d"); |
| 825 | break; |
| 826 | } |
| 827 | |
David Daney | f696a10 | 2009-06-23 11:34:08 -0700 | [diff] [blame] | 828 | if (!dev->netdev_ops) { |
Vasiliy Kulikov | c4711c3 | 2010-09-28 21:08:01 +0400 | [diff] [blame] | 829 | free_netdev(dev); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 830 | } else if (register_netdev(dev) < 0) { |
Gulsah Kose | 0a5fcc6 | 2014-09-20 23:32:05 +0300 | [diff] [blame] | 831 | pr_err("Failed to register ethernet device for interface %d, port %d\n", |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 832 | interface, priv->port); |
Vasiliy Kulikov | c4711c3 | 2010-09-28 21:08:01 +0400 | [diff] [blame] | 833 | free_netdev(dev); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 834 | } else { |
| 835 | cvm_oct_device[priv->port] = dev; |
| 836 | fau -= |
| 837 | cvmx_pko_get_num_queues(priv->port) * |
| 838 | sizeof(uint32_t); |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 839 | queue_delayed_work(cvm_oct_poll_queue, |
Nandini Hanumanthagowda | b186410 | 2013-10-13 20:19:49 +0530 | [diff] [blame] | 840 | &priv->port_periodic_work, HZ); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 841 | } |
| 842 | } |
| 843 | } |
| 844 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 845 | cvm_oct_tx_initialize(); |
David Daney | 3368c78 | 2010-01-07 11:05:04 -0800 | [diff] [blame] | 846 | cvm_oct_rx_initialize(); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 847 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 848 | /* |
Gustavo A. R. Silva | f5801a8 | 2015-01-11 15:44:39 -0600 | [diff] [blame] | 849 | * 150 uS: about 10 1500-byte packets at 1GE. |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 850 | */ |
| 851 | cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 852 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 853 | queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 854 | |
| 855 | return 0; |
| 856 | } |
| 857 | |
Bill Pemberton | f7e2f35 | 2012-11-19 13:26:42 -0500 | [diff] [blame] | 858 | static int cvm_oct_remove(struct platform_device *pdev) |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 859 | { |
| 860 | int port; |
| 861 | |
| 862 | /* Disable POW interrupt */ |
Aaro Koskinen | bcbb139 | 2015-08-13 16:21:39 +0300 | [diff] [blame] | 863 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) |
| 864 | cvmx_write_csr(CVMX_SSO_WQ_INT_THRX(pow_receive_group), 0); |
| 865 | else |
| 866 | cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 867 | |
| 868 | cvmx_ipd_disable(); |
| 869 | |
| 870 | /* Free the interrupt handler */ |
| 871 | free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device); |
| 872 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 873 | atomic_inc_return(&cvm_oct_poll_queue_stopping); |
| 874 | cancel_delayed_work_sync(&cvm_oct_rx_refill_work); |
| 875 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 876 | cvm_oct_rx_shutdown(); |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 877 | cvm_oct_tx_shutdown(); |
| 878 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 879 | cvmx_pko_disable(); |
| 880 | |
| 881 | /* Free the ethernet devices */ |
| 882 | for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { |
| 883 | if (cvm_oct_device[port]) { |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 884 | struct net_device *dev = cvm_oct_device[port]; |
| 885 | struct octeon_ethernet *priv = netdev_priv(dev); |
Gulsah Kose | 39bc751 | 2014-09-20 23:27:39 +0300 | [diff] [blame] | 886 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 887 | cancel_delayed_work_sync(&priv->port_periodic_work); |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 888 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 889 | cvm_oct_tx_shutdown_dev(dev); |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 890 | unregister_netdev(dev); |
Vasiliy Kulikov | c4711c3 | 2010-09-28 21:08:01 +0400 | [diff] [blame] | 891 | free_netdev(dev); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 892 | cvm_oct_device[port] = NULL; |
| 893 | } |
| 894 | } |
| 895 | |
David Daney | f8c2648 | 2010-02-15 12:13:17 -0800 | [diff] [blame] | 896 | destroy_workqueue(cvm_oct_poll_queue); |
| 897 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 898 | cvmx_pko_shutdown(); |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 899 | |
| 900 | cvmx_ipd_free_ptr(); |
| 901 | |
| 902 | /* Free the HW pools */ |
| 903 | cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, |
| 904 | num_packet_buffers); |
| 905 | cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, |
| 906 | num_packet_buffers); |
| 907 | if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) |
| 908 | cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, |
| 909 | CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128); |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 910 | return 0; |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 911 | } |
| 912 | |
Fabian Frederick | 8779457 | 2015-03-16 20:59:08 +0100 | [diff] [blame] | 913 | static const struct of_device_id cvm_oct_match[] = { |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 914 | { |
| 915 | .compatible = "cavium,octeon-3860-pip", |
| 916 | }, |
| 917 | {}, |
| 918 | }; |
| 919 | MODULE_DEVICE_TABLE(of, cvm_oct_match); |
| 920 | |
| 921 | static struct platform_driver cvm_oct_driver = { |
| 922 | .probe = cvm_oct_probe, |
Bill Pemberton | 095d0bb | 2012-11-19 13:20:57 -0500 | [diff] [blame] | 923 | .remove = cvm_oct_remove, |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 924 | .driver = { |
David Daney | df9244c | 2012-07-05 18:12:40 +0200 | [diff] [blame] | 925 | .name = KBUILD_MODNAME, |
| 926 | .of_match_table = cvm_oct_match, |
| 927 | }, |
| 928 | }; |
| 929 | |
| 930 | module_platform_driver(cvm_oct_driver); |
| 931 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 932 | MODULE_LICENSE("GPL"); |
| 933 | MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>"); |
| 934 | MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver."); |