Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1 | /**************************************************************************/ |
| 2 | /* */ |
| 3 | /* IBM System i and System p Virtual NIC Device Driver */ |
| 4 | /* Copyright (C) 2014 IBM Corp. */ |
| 5 | /* Santiago Leon (santi_leon@yahoo.com) */ |
| 6 | /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */ |
| 7 | /* John Allen (jallen@linux.vnet.ibm.com) */ |
| 8 | /* */ |
| 9 | /* This program is free software; you can redistribute it and/or modify */ |
| 10 | /* it under the terms of the GNU General Public License as published by */ |
| 11 | /* the Free Software Foundation; either version 2 of the License, or */ |
| 12 | /* (at your option) any later version. */ |
| 13 | /* */ |
| 14 | /* This program is distributed in the hope that it will be useful, */ |
| 15 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| 16 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
| 17 | /* GNU General Public License for more details. */ |
| 18 | /* */ |
| 19 | /* You should have received a copy of the GNU General Public License */ |
| 20 | /* along with this program. */ |
| 21 | /* */ |
| 22 | /* This module contains the implementation of a virtual ethernet device */ |
| 23 | /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */ |
| 24 | /* option of the RS/6000 Platform Architecture to interface with virtual */ |
| 25 | /* ethernet NICs that are presented to the partition by the hypervisor. */ |
| 26 | /* */ |
| 27 | /* Messages are passed between the VNIC driver and the VNIC server using */ |
| 28 | /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */ |
| 29 | /* issue and receive commands that initiate communication with the server */ |
| 30 | /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */ |
| 31 | /* are used by the driver to notify the server that a packet is */ |
| 32 | /* ready for transmission or that a buffer has been added to receive a */ |
| 33 | /* packet. Subsequently, sCRQs are used by the server to notify the */ |
| 34 | /* driver that a packet transmission has been completed or that a packet */ |
| 35 | /* has been received and placed in a waiting buffer. */ |
| 36 | /* */ |
| 37 | /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */ |
| 38 | /* which skbs are DMA mapped and immediately unmapped when the transmit */ |
| 39 | /* or receive has been completed, the VNIC driver is required to use */ |
| 40 | /* "long term mapping". This entails that large, continuous DMA mapped */ |
| 41 | /* buffers are allocated on driver initialization and these buffers are */ |
| 42 | /* then continuously reused to pass skbs to and from the VNIC server. */ |
| 43 | /* */ |
| 44 | /**************************************************************************/ |
| 45 | |
| 46 | #include <linux/module.h> |
| 47 | #include <linux/moduleparam.h> |
| 48 | #include <linux/types.h> |
| 49 | #include <linux/errno.h> |
| 50 | #include <linux/completion.h> |
| 51 | #include <linux/ioport.h> |
| 52 | #include <linux/dma-mapping.h> |
| 53 | #include <linux/kernel.h> |
| 54 | #include <linux/netdevice.h> |
| 55 | #include <linux/etherdevice.h> |
| 56 | #include <linux/skbuff.h> |
| 57 | #include <linux/init.h> |
| 58 | #include <linux/delay.h> |
| 59 | #include <linux/mm.h> |
| 60 | #include <linux/ethtool.h> |
| 61 | #include <linux/proc_fs.h> |
| 62 | #include <linux/in.h> |
| 63 | #include <linux/ip.h> |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 64 | #include <linux/ipv6.h> |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 65 | #include <linux/irq.h> |
| 66 | #include <linux/kthread.h> |
| 67 | #include <linux/seq_file.h> |
| 68 | #include <linux/debugfs.h> |
| 69 | #include <linux/interrupt.h> |
| 70 | #include <net/net_namespace.h> |
| 71 | #include <asm/hvcall.h> |
| 72 | #include <linux/atomic.h> |
| 73 | #include <asm/vio.h> |
| 74 | #include <asm/iommu.h> |
| 75 | #include <linux/uaccess.h> |
| 76 | #include <asm/firmware.h> |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 77 | #include <linux/workqueue.h> |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 78 | |
| 79 | #include "ibmvnic.h" |
| 80 | |
| 81 | static const char ibmvnic_driver_name[] = "ibmvnic"; |
| 82 | static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; |
| 83 | |
| 84 | MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>"); |
| 85 | MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); |
| 86 | MODULE_LICENSE("GPL"); |
| 87 | MODULE_VERSION(IBMVNIC_DRIVER_VERSION); |
| 88 | |
| 89 | static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; |
| 90 | static int ibmvnic_remove(struct vio_dev *); |
| 91 | static void release_sub_crqs(struct ibmvnic_adapter *); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 92 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 93 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); |
| 94 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); |
| 95 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); |
| 96 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); |
| 97 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, |
| 98 | union sub_crq *sub_crq); |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 99 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 100 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
| 101 | static int enable_scrq_irq(struct ibmvnic_adapter *, |
| 102 | struct ibmvnic_sub_crq_queue *); |
| 103 | static int disable_scrq_irq(struct ibmvnic_adapter *, |
| 104 | struct ibmvnic_sub_crq_queue *); |
| 105 | static int pending_scrq(struct ibmvnic_adapter *, |
| 106 | struct ibmvnic_sub_crq_queue *); |
| 107 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, |
| 108 | struct ibmvnic_sub_crq_queue *); |
| 109 | static int ibmvnic_poll(struct napi_struct *napi, int data); |
| 110 | static void send_map_query(struct ibmvnic_adapter *adapter); |
| 111 | static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); |
| 112 | static void send_request_unmap(struct ibmvnic_adapter *, u8); |
| 113 | |
| 114 | struct ibmvnic_stat { |
| 115 | char name[ETH_GSTRING_LEN]; |
| 116 | int offset; |
| 117 | }; |
| 118 | |
| 119 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ |
| 120 | offsetof(struct ibmvnic_statistics, stat)) |
| 121 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) |
| 122 | |
| 123 | static const struct ibmvnic_stat ibmvnic_stats[] = { |
| 124 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, |
| 125 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, |
| 126 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, |
| 127 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, |
| 128 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, |
| 129 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, |
| 130 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, |
| 131 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, |
| 132 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, |
| 133 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, |
| 134 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, |
| 135 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, |
| 136 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, |
| 137 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, |
| 138 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, |
| 139 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, |
| 140 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, |
| 141 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, |
| 142 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, |
| 143 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, |
| 144 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, |
| 145 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, |
| 146 | }; |
| 147 | |
| 148 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, |
| 149 | unsigned long length, unsigned long *number, |
| 150 | unsigned long *irq) |
| 151 | { |
| 152 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
| 153 | long rc; |
| 154 | |
| 155 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); |
| 156 | *number = retbuf[0]; |
| 157 | *irq = retbuf[1]; |
| 158 | |
| 159 | return rc; |
| 160 | } |
| 161 | |
| 162 | /* net_device_ops functions */ |
| 163 | |
| 164 | static void init_rx_pool(struct ibmvnic_adapter *adapter, |
| 165 | struct ibmvnic_rx_pool *rx_pool, int num, int index, |
| 166 | int buff_size, int active) |
| 167 | { |
| 168 | netdev_dbg(adapter->netdev, |
| 169 | "Initializing rx_pool %d, %d buffs, %d bytes each\n", |
| 170 | index, num, buff_size); |
| 171 | rx_pool->size = num; |
| 172 | rx_pool->index = index; |
| 173 | rx_pool->buff_size = buff_size; |
| 174 | rx_pool->active = active; |
| 175 | } |
| 176 | |
| 177 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, |
| 178 | struct ibmvnic_long_term_buff *ltb, int size) |
| 179 | { |
| 180 | struct device *dev = &adapter->vdev->dev; |
| 181 | |
| 182 | ltb->size = size; |
| 183 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, |
| 184 | GFP_KERNEL); |
| 185 | |
| 186 | if (!ltb->buff) { |
| 187 | dev_err(dev, "Couldn't alloc long term buffer\n"); |
| 188 | return -ENOMEM; |
| 189 | } |
| 190 | ltb->map_id = adapter->map_id; |
| 191 | adapter->map_id++; |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 192 | |
| 193 | init_completion(&adapter->fw_done); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 194 | send_request_map(adapter, ltb->addr, |
| 195 | ltb->size, ltb->map_id); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 196 | wait_for_completion(&adapter->fw_done); |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, |
| 201 | struct ibmvnic_long_term_buff *ltb) |
| 202 | { |
| 203 | struct device *dev = &adapter->vdev->dev; |
| 204 | |
| 205 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 206 | if (!adapter->failover) |
| 207 | send_request_unmap(adapter, ltb->map_id); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | static int alloc_rx_pool(struct ibmvnic_adapter *adapter, |
| 211 | struct ibmvnic_rx_pool *pool) |
| 212 | { |
| 213 | struct device *dev = &adapter->vdev->dev; |
| 214 | int i; |
| 215 | |
| 216 | pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL); |
| 217 | if (!pool->free_map) |
| 218 | return -ENOMEM; |
| 219 | |
| 220 | pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff), |
| 221 | GFP_KERNEL); |
| 222 | |
| 223 | if (!pool->rx_buff) { |
| 224 | dev_err(dev, "Couldn't alloc rx buffers\n"); |
| 225 | kfree(pool->free_map); |
| 226 | return -ENOMEM; |
| 227 | } |
| 228 | |
| 229 | if (alloc_long_term_buff(adapter, &pool->long_term_buff, |
| 230 | pool->size * pool->buff_size)) { |
| 231 | kfree(pool->free_map); |
| 232 | kfree(pool->rx_buff); |
| 233 | return -ENOMEM; |
| 234 | } |
| 235 | |
| 236 | for (i = 0; i < pool->size; ++i) |
| 237 | pool->free_map[i] = i; |
| 238 | |
| 239 | atomic_set(&pool->available, 0); |
| 240 | pool->next_alloc = 0; |
| 241 | pool->next_free = 0; |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, |
| 247 | struct ibmvnic_rx_pool *pool) |
| 248 | { |
| 249 | int count = pool->size - atomic_read(&pool->available); |
| 250 | struct device *dev = &adapter->vdev->dev; |
| 251 | int buffers_added = 0; |
| 252 | unsigned long lpar_rc; |
| 253 | union sub_crq sub_crq; |
| 254 | struct sk_buff *skb; |
| 255 | unsigned int offset; |
| 256 | dma_addr_t dma_addr; |
| 257 | unsigned char *dst; |
| 258 | u64 *handle_array; |
| 259 | int shift = 0; |
| 260 | int index; |
| 261 | int i; |
| 262 | |
| 263 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
| 264 | be32_to_cpu(adapter->login_rsp_buf-> |
| 265 | off_rxadd_subcrqs)); |
| 266 | |
| 267 | for (i = 0; i < count; ++i) { |
| 268 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); |
| 269 | if (!skb) { |
| 270 | dev_err(dev, "Couldn't replenish rx buff\n"); |
| 271 | adapter->replenish_no_mem++; |
| 272 | break; |
| 273 | } |
| 274 | |
| 275 | index = pool->free_map[pool->next_free]; |
| 276 | |
| 277 | if (pool->rx_buff[index].skb) |
| 278 | dev_err(dev, "Inconsistent free_map!\n"); |
| 279 | |
| 280 | /* Copy the skb to the long term mapped DMA buffer */ |
| 281 | offset = index * pool->buff_size; |
| 282 | dst = pool->long_term_buff.buff + offset; |
| 283 | memset(dst, 0, pool->buff_size); |
| 284 | dma_addr = pool->long_term_buff.addr + offset; |
| 285 | pool->rx_buff[index].data = dst; |
| 286 | |
| 287 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; |
| 288 | pool->rx_buff[index].dma = dma_addr; |
| 289 | pool->rx_buff[index].skb = skb; |
| 290 | pool->rx_buff[index].pool_index = pool->index; |
| 291 | pool->rx_buff[index].size = pool->buff_size; |
| 292 | |
| 293 | memset(&sub_crq, 0, sizeof(sub_crq)); |
| 294 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; |
| 295 | sub_crq.rx_add.correlator = |
| 296 | cpu_to_be64((u64)&pool->rx_buff[index]); |
| 297 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); |
| 298 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; |
| 299 | |
| 300 | /* The length field of the sCRQ is defined to be 24 bits so the |
| 301 | * buffer size needs to be left shifted by a byte before it is |
| 302 | * converted to big endian to prevent the last byte from being |
| 303 | * truncated. |
| 304 | */ |
| 305 | #ifdef __LITTLE_ENDIAN__ |
| 306 | shift = 8; |
| 307 | #endif |
| 308 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); |
| 309 | |
| 310 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], |
| 311 | &sub_crq); |
| 312 | if (lpar_rc != H_SUCCESS) |
| 313 | goto failure; |
| 314 | |
| 315 | buffers_added++; |
| 316 | adapter->replenish_add_buff_success++; |
| 317 | pool->next_free = (pool->next_free + 1) % pool->size; |
| 318 | } |
| 319 | atomic_add(buffers_added, &pool->available); |
| 320 | return; |
| 321 | |
| 322 | failure: |
| 323 | dev_info(dev, "replenish pools failure\n"); |
| 324 | pool->free_map[pool->next_free] = index; |
| 325 | pool->rx_buff[index].skb = NULL; |
| 326 | if (!dma_mapping_error(dev, dma_addr)) |
| 327 | dma_unmap_single(dev, dma_addr, pool->buff_size, |
| 328 | DMA_FROM_DEVICE); |
| 329 | |
| 330 | dev_kfree_skb_any(skb); |
| 331 | adapter->replenish_add_buff_failure++; |
| 332 | atomic_add(buffers_added, &pool->available); |
| 333 | } |
| 334 | |
| 335 | static void replenish_pools(struct ibmvnic_adapter *adapter) |
| 336 | { |
| 337 | int i; |
| 338 | |
| 339 | if (adapter->migrated) |
| 340 | return; |
| 341 | |
| 342 | adapter->replenish_task_cycles++; |
| 343 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
| 344 | i++) { |
| 345 | if (adapter->rx_pool[i].active) |
| 346 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | static void free_rx_pool(struct ibmvnic_adapter *adapter, |
| 351 | struct ibmvnic_rx_pool *pool) |
| 352 | { |
| 353 | int i; |
| 354 | |
| 355 | kfree(pool->free_map); |
| 356 | pool->free_map = NULL; |
| 357 | |
| 358 | if (!pool->rx_buff) |
| 359 | return; |
| 360 | |
| 361 | for (i = 0; i < pool->size; i++) { |
| 362 | if (pool->rx_buff[i].skb) { |
| 363 | dev_kfree_skb_any(pool->rx_buff[i].skb); |
| 364 | pool->rx_buff[i].skb = NULL; |
| 365 | } |
| 366 | } |
| 367 | kfree(pool->rx_buff); |
| 368 | pool->rx_buff = NULL; |
| 369 | } |
| 370 | |
| 371 | static int ibmvnic_open(struct net_device *netdev) |
| 372 | { |
| 373 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 374 | struct device *dev = &adapter->vdev->dev; |
| 375 | struct ibmvnic_tx_pool *tx_pool; |
| 376 | union ibmvnic_crq crq; |
| 377 | int rxadd_subcrqs; |
| 378 | u64 *size_array; |
| 379 | int tx_subcrqs; |
| 380 | int i, j; |
| 381 | |
| 382 | rxadd_subcrqs = |
| 383 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
| 384 | tx_subcrqs = |
| 385 | be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); |
| 386 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
| 387 | be32_to_cpu(adapter->login_rsp_buf-> |
| 388 | off_rxadd_buff_size)); |
| 389 | adapter->map_id = 1; |
| 390 | adapter->napi = kcalloc(adapter->req_rx_queues, |
| 391 | sizeof(struct napi_struct), GFP_KERNEL); |
| 392 | if (!adapter->napi) |
| 393 | goto alloc_napi_failed; |
| 394 | for (i = 0; i < adapter->req_rx_queues; i++) { |
| 395 | netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, |
| 396 | NAPI_POLL_WEIGHT); |
| 397 | napi_enable(&adapter->napi[i]); |
| 398 | } |
| 399 | adapter->rx_pool = |
| 400 | kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL); |
| 401 | |
| 402 | if (!adapter->rx_pool) |
| 403 | goto rx_pool_arr_alloc_failed; |
| 404 | send_map_query(adapter); |
| 405 | for (i = 0; i < rxadd_subcrqs; i++) { |
| 406 | init_rx_pool(adapter, &adapter->rx_pool[i], |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 407 | adapter->req_rx_add_entries_per_subcrq, i, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 408 | be64_to_cpu(size_array[i]), 1); |
| 409 | if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) { |
| 410 | dev_err(dev, "Couldn't alloc rx pool\n"); |
| 411 | goto rx_pool_alloc_failed; |
| 412 | } |
| 413 | } |
| 414 | adapter->tx_pool = |
| 415 | kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); |
| 416 | |
| 417 | if (!adapter->tx_pool) |
| 418 | goto tx_pool_arr_alloc_failed; |
| 419 | for (i = 0; i < tx_subcrqs; i++) { |
| 420 | tx_pool = &adapter->tx_pool[i]; |
| 421 | tx_pool->tx_buff = |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 422 | kcalloc(adapter->req_tx_entries_per_subcrq, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 423 | sizeof(struct ibmvnic_tx_buff), GFP_KERNEL); |
| 424 | if (!tx_pool->tx_buff) |
| 425 | goto tx_pool_alloc_failed; |
| 426 | |
| 427 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 428 | adapter->req_tx_entries_per_subcrq * |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 429 | adapter->req_mtu)) |
| 430 | goto tx_ltb_alloc_failed; |
| 431 | |
| 432 | tx_pool->free_map = |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 433 | kcalloc(adapter->req_tx_entries_per_subcrq, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 434 | sizeof(int), GFP_KERNEL); |
| 435 | if (!tx_pool->free_map) |
| 436 | goto tx_fm_alloc_failed; |
| 437 | |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 438 | for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++) |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 439 | tx_pool->free_map[j] = j; |
| 440 | |
| 441 | tx_pool->consumer_index = 0; |
| 442 | tx_pool->producer_index = 0; |
| 443 | } |
| 444 | adapter->bounce_buffer_size = |
| 445 | (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; |
| 446 | adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size, |
| 447 | GFP_KERNEL); |
| 448 | if (!adapter->bounce_buffer) |
| 449 | goto bounce_alloc_failed; |
| 450 | |
| 451 | adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer, |
| 452 | adapter->bounce_buffer_size, |
| 453 | DMA_TO_DEVICE); |
| 454 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
| 455 | dev_err(dev, "Couldn't map tx bounce buffer\n"); |
| 456 | goto bounce_map_failed; |
| 457 | } |
| 458 | replenish_pools(adapter); |
| 459 | |
| 460 | /* We're ready to receive frames, enable the sub-crq interrupts and |
| 461 | * set the logical link state to up |
| 462 | */ |
| 463 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 464 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); |
| 465 | |
| 466 | for (i = 0; i < adapter->req_tx_queues; i++) |
| 467 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); |
| 468 | |
| 469 | memset(&crq, 0, sizeof(crq)); |
| 470 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; |
| 471 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; |
| 472 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP; |
| 473 | ibmvnic_send_crq(adapter, &crq); |
| 474 | |
Thomas Falcon | b8efb89 | 2016-07-06 15:35:15 -0500 | [diff] [blame] | 475 | netif_tx_start_all_queues(netdev); |
| 476 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 477 | return 0; |
| 478 | |
| 479 | bounce_map_failed: |
| 480 | kfree(adapter->bounce_buffer); |
| 481 | bounce_alloc_failed: |
| 482 | i = tx_subcrqs - 1; |
| 483 | kfree(adapter->tx_pool[i].free_map); |
| 484 | tx_fm_alloc_failed: |
| 485 | free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff); |
| 486 | tx_ltb_alloc_failed: |
| 487 | kfree(adapter->tx_pool[i].tx_buff); |
| 488 | tx_pool_alloc_failed: |
| 489 | for (j = 0; j < i; j++) { |
| 490 | kfree(adapter->tx_pool[j].tx_buff); |
| 491 | free_long_term_buff(adapter, |
| 492 | &adapter->tx_pool[j].long_term_buff); |
| 493 | kfree(adapter->tx_pool[j].free_map); |
| 494 | } |
| 495 | kfree(adapter->tx_pool); |
| 496 | adapter->tx_pool = NULL; |
| 497 | tx_pool_arr_alloc_failed: |
| 498 | i = rxadd_subcrqs; |
| 499 | rx_pool_alloc_failed: |
| 500 | for (j = 0; j < i; j++) { |
| 501 | free_rx_pool(adapter, &adapter->rx_pool[j]); |
| 502 | free_long_term_buff(adapter, |
| 503 | &adapter->rx_pool[j].long_term_buff); |
| 504 | } |
| 505 | kfree(adapter->rx_pool); |
| 506 | adapter->rx_pool = NULL; |
| 507 | rx_pool_arr_alloc_failed: |
| 508 | for (i = 0; i < adapter->req_rx_queues; i++) |
Nathan Fontenot | 4544ba3 | 2017-05-23 21:53:38 -0400 | [diff] [blame] | 509 | napi_disable(&adapter->napi[i]); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 510 | alloc_napi_failed: |
| 511 | return -ENOMEM; |
| 512 | } |
| 513 | |
Brian King | 5a04998 | 2017-04-19 13:45:10 -0400 | [diff] [blame] | 514 | static void disable_sub_crqs(struct ibmvnic_adapter *adapter) |
| 515 | { |
| 516 | int i; |
| 517 | |
| 518 | if (adapter->tx_scrq) { |
| 519 | for (i = 0; i < adapter->req_tx_queues; i++) |
| 520 | if (adapter->tx_scrq[i]) |
| 521 | disable_irq(adapter->tx_scrq[i]->irq); |
| 522 | } |
| 523 | |
| 524 | if (adapter->rx_scrq) { |
| 525 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 526 | if (adapter->rx_scrq[i]) |
| 527 | disable_irq(adapter->rx_scrq[i]->irq); |
| 528 | } |
| 529 | } |
| 530 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 531 | static int ibmvnic_close(struct net_device *netdev) |
| 532 | { |
| 533 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 534 | struct device *dev = &adapter->vdev->dev; |
| 535 | union ibmvnic_crq crq; |
| 536 | int i; |
| 537 | |
| 538 | adapter->closing = true; |
Brian King | 5a04998 | 2017-04-19 13:45:10 -0400 | [diff] [blame] | 539 | disable_sub_crqs(adapter); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 540 | |
| 541 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 542 | napi_disable(&adapter->napi[i]); |
| 543 | |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 544 | if (!adapter->failover) |
| 545 | netif_tx_stop_all_queues(netdev); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 546 | |
| 547 | if (adapter->bounce_buffer) { |
| 548 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
| 549 | dma_unmap_single(&adapter->vdev->dev, |
| 550 | adapter->bounce_buffer_dma, |
| 551 | adapter->bounce_buffer_size, |
| 552 | DMA_BIDIRECTIONAL); |
| 553 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; |
| 554 | } |
| 555 | kfree(adapter->bounce_buffer); |
| 556 | adapter->bounce_buffer = NULL; |
| 557 | } |
| 558 | |
| 559 | memset(&crq, 0, sizeof(crq)); |
| 560 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; |
| 561 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; |
| 562 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN; |
| 563 | ibmvnic_send_crq(adapter, &crq); |
| 564 | |
| 565 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); |
| 566 | i++) { |
| 567 | kfree(adapter->tx_pool[i].tx_buff); |
| 568 | free_long_term_buff(adapter, |
| 569 | &adapter->tx_pool[i].long_term_buff); |
| 570 | kfree(adapter->tx_pool[i].free_map); |
| 571 | } |
| 572 | kfree(adapter->tx_pool); |
| 573 | adapter->tx_pool = NULL; |
| 574 | |
| 575 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
| 576 | i++) { |
| 577 | free_rx_pool(adapter, &adapter->rx_pool[i]); |
| 578 | free_long_term_buff(adapter, |
| 579 | &adapter->rx_pool[i].long_term_buff); |
| 580 | } |
| 581 | kfree(adapter->rx_pool); |
| 582 | adapter->rx_pool = NULL; |
| 583 | |
| 584 | adapter->closing = false; |
| 585 | |
| 586 | return 0; |
| 587 | } |
| 588 | |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 589 | /** |
| 590 | * build_hdr_data - creates L2/L3/L4 header data buffer |
| 591 | * @hdr_field - bitfield determining needed headers |
| 592 | * @skb - socket buffer |
| 593 | * @hdr_len - array of header lengths |
| 594 | * @tot_len - total length of data |
| 595 | * |
| 596 | * Reads hdr_field to determine which headers are needed by firmware. |
| 597 | * Builds a buffer containing these headers. Saves individual header |
| 598 | * lengths and total buffer length to be used to build descriptors. |
| 599 | */ |
| 600 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, |
| 601 | int *hdr_len, u8 *hdr_data) |
| 602 | { |
| 603 | int len = 0; |
| 604 | u8 *hdr; |
| 605 | |
| 606 | hdr_len[0] = sizeof(struct ethhdr); |
| 607 | |
| 608 | if (skb->protocol == htons(ETH_P_IP)) { |
| 609 | hdr_len[1] = ip_hdr(skb)->ihl * 4; |
| 610 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 611 | hdr_len[2] = tcp_hdrlen(skb); |
| 612 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) |
| 613 | hdr_len[2] = sizeof(struct udphdr); |
| 614 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
| 615 | hdr_len[1] = sizeof(struct ipv6hdr); |
| 616 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 617 | hdr_len[2] = tcp_hdrlen(skb); |
| 618 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) |
| 619 | hdr_len[2] = sizeof(struct udphdr); |
| 620 | } |
| 621 | |
| 622 | memset(hdr_data, 0, 120); |
| 623 | if ((hdr_field >> 6) & 1) { |
| 624 | hdr = skb_mac_header(skb); |
| 625 | memcpy(hdr_data, hdr, hdr_len[0]); |
| 626 | len += hdr_len[0]; |
| 627 | } |
| 628 | |
| 629 | if ((hdr_field >> 5) & 1) { |
| 630 | hdr = skb_network_header(skb); |
| 631 | memcpy(hdr_data + len, hdr, hdr_len[1]); |
| 632 | len += hdr_len[1]; |
| 633 | } |
| 634 | |
| 635 | if ((hdr_field >> 4) & 1) { |
| 636 | hdr = skb_transport_header(skb); |
| 637 | memcpy(hdr_data + len, hdr, hdr_len[2]); |
| 638 | len += hdr_len[2]; |
| 639 | } |
| 640 | return len; |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * create_hdr_descs - create header and header extension descriptors |
| 645 | * @hdr_field - bitfield determining needed headers |
| 646 | * @data - buffer containing header data |
| 647 | * @len - length of data buffer |
| 648 | * @hdr_len - array of individual header lengths |
| 649 | * @scrq_arr - descriptor array |
| 650 | * |
| 651 | * Creates header and, if needed, header extension descriptors and |
| 652 | * places them in a descriptor array, scrq_arr |
| 653 | */ |
| 654 | |
| 655 | static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, |
| 656 | union sub_crq *scrq_arr) |
| 657 | { |
| 658 | union sub_crq hdr_desc; |
| 659 | int tmp_len = len; |
| 660 | u8 *data, *cur; |
| 661 | int tmp; |
| 662 | |
| 663 | while (tmp_len > 0) { |
| 664 | cur = hdr_data + len - tmp_len; |
| 665 | |
| 666 | memset(&hdr_desc, 0, sizeof(hdr_desc)); |
| 667 | if (cur != hdr_data) { |
| 668 | data = hdr_desc.hdr_ext.data; |
| 669 | tmp = tmp_len > 29 ? 29 : tmp_len; |
| 670 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; |
| 671 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; |
| 672 | hdr_desc.hdr_ext.len = tmp; |
| 673 | } else { |
| 674 | data = hdr_desc.hdr.data; |
| 675 | tmp = tmp_len > 24 ? 24 : tmp_len; |
| 676 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; |
| 677 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; |
| 678 | hdr_desc.hdr.len = tmp; |
| 679 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; |
| 680 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); |
| 681 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; |
| 682 | hdr_desc.hdr.flag = hdr_field << 1; |
| 683 | } |
| 684 | memcpy(data, cur, tmp); |
| 685 | tmp_len -= tmp; |
| 686 | *scrq_arr = hdr_desc; |
| 687 | scrq_arr++; |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | /** |
| 692 | * build_hdr_descs_arr - build a header descriptor array |
| 693 | * @skb - socket buffer |
| 694 | * @num_entries - number of descriptors to be sent |
| 695 | * @subcrq - first TX descriptor |
| 696 | * @hdr_field - bit field determining which headers will be sent |
| 697 | * |
| 698 | * This function will build a TX descriptor array with applicable |
| 699 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. |
| 700 | */ |
| 701 | |
| 702 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, |
| 703 | int *num_entries, u8 hdr_field) |
| 704 | { |
| 705 | int hdr_len[3] = {0, 0, 0}; |
| 706 | int tot_len, len; |
| 707 | u8 *hdr_data = txbuff->hdr_data; |
| 708 | |
| 709 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, |
| 710 | txbuff->hdr_data); |
| 711 | len = tot_len; |
| 712 | len -= 24; |
| 713 | if (len > 0) |
| 714 | num_entries += len % 29 ? len / 29 + 1 : len / 29; |
| 715 | create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, |
| 716 | txbuff->indir_arr + 1); |
| 717 | } |
| 718 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 719 | static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
| 720 | { |
| 721 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 722 | int queue_num = skb_get_queue_mapping(skb); |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 723 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 724 | struct device *dev = &adapter->vdev->dev; |
| 725 | struct ibmvnic_tx_buff *tx_buff = NULL; |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 726 | struct ibmvnic_sub_crq_queue *tx_scrq; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 727 | struct ibmvnic_tx_pool *tx_pool; |
| 728 | unsigned int tx_send_failed = 0; |
| 729 | unsigned int tx_map_failed = 0; |
| 730 | unsigned int tx_dropped = 0; |
| 731 | unsigned int tx_packets = 0; |
| 732 | unsigned int tx_bytes = 0; |
| 733 | dma_addr_t data_dma_addr; |
| 734 | struct netdev_queue *txq; |
| 735 | bool used_bounce = false; |
| 736 | unsigned long lpar_rc; |
| 737 | union sub_crq tx_crq; |
| 738 | unsigned int offset; |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 739 | int num_entries = 1; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 740 | unsigned char *dst; |
| 741 | u64 *handle_array; |
| 742 | int index = 0; |
| 743 | int ret = 0; |
| 744 | |
| 745 | tx_pool = &adapter->tx_pool[queue_num]; |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 746 | tx_scrq = adapter->tx_scrq[queue_num]; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 747 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); |
| 748 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
| 749 | be32_to_cpu(adapter->login_rsp_buf-> |
| 750 | off_txsubm_subcrqs)); |
| 751 | if (adapter->migrated) { |
| 752 | tx_send_failed++; |
| 753 | tx_dropped++; |
| 754 | ret = NETDEV_TX_BUSY; |
| 755 | goto out; |
| 756 | } |
| 757 | |
| 758 | index = tx_pool->free_map[tx_pool->consumer_index]; |
| 759 | offset = index * adapter->req_mtu; |
| 760 | dst = tx_pool->long_term_buff.buff + offset; |
| 761 | memset(dst, 0, adapter->req_mtu); |
| 762 | skb_copy_from_linear_data(skb, dst, skb->len); |
| 763 | data_dma_addr = tx_pool->long_term_buff.addr + offset; |
| 764 | |
| 765 | tx_pool->consumer_index = |
| 766 | (tx_pool->consumer_index + 1) % |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 767 | adapter->req_tx_entries_per_subcrq; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 768 | |
| 769 | tx_buff = &tx_pool->tx_buff[index]; |
| 770 | tx_buff->skb = skb; |
| 771 | tx_buff->data_dma[0] = data_dma_addr; |
| 772 | tx_buff->data_len[0] = skb->len; |
| 773 | tx_buff->index = index; |
| 774 | tx_buff->pool_index = queue_num; |
| 775 | tx_buff->last_frag = true; |
| 776 | tx_buff->used_bounce = used_bounce; |
| 777 | |
| 778 | memset(&tx_crq, 0, sizeof(tx_crq)); |
| 779 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; |
| 780 | tx_crq.v1.type = IBMVNIC_TX_DESC; |
| 781 | tx_crq.v1.n_crq_elem = 1; |
| 782 | tx_crq.v1.n_sge = 1; |
| 783 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; |
| 784 | tx_crq.v1.correlator = cpu_to_be32(index); |
| 785 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); |
| 786 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); |
| 787 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); |
| 788 | |
| 789 | if (adapter->vlan_header_insertion) { |
| 790 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; |
| 791 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); |
| 792 | } |
| 793 | |
| 794 | if (skb->protocol == htons(ETH_P_IP)) { |
| 795 | if (ip_hdr(skb)->version == 4) |
| 796 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; |
| 797 | else if (ip_hdr(skb)->version == 6) |
| 798 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; |
| 799 | |
| 800 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 801 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; |
| 802 | else if (ip_hdr(skb)->protocol != IPPROTO_TCP) |
| 803 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; |
| 804 | } |
| 805 | |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 806 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 807 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 808 | hdrs += 2; |
| 809 | } |
| 810 | /* determine if l2/3/4 headers are sent to firmware */ |
| 811 | if ((*hdrs >> 7) & 1 && |
| 812 | (skb->protocol == htons(ETH_P_IP) || |
| 813 | skb->protocol == htons(ETH_P_IPV6))) { |
| 814 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); |
| 815 | tx_crq.v1.n_crq_elem = num_entries; |
| 816 | tx_buff->indir_arr[0] = tx_crq; |
| 817 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, |
| 818 | sizeof(tx_buff->indir_arr), |
| 819 | DMA_TO_DEVICE); |
| 820 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { |
| 821 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 822 | dev_err(dev, "tx: unable to map descriptor array\n"); |
| 823 | tx_map_failed++; |
| 824 | tx_dropped++; |
| 825 | ret = NETDEV_TX_BUSY; |
| 826 | goto out; |
| 827 | } |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 828 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 829 | (u64)tx_buff->indir_dma, |
| 830 | (u64)num_entries); |
| 831 | } else { |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 832 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
| 833 | &tx_crq); |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 834 | } |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 835 | if (lpar_rc != H_SUCCESS) { |
| 836 | dev_err(dev, "tx failed with code %ld\n", lpar_rc); |
| 837 | |
| 838 | if (tx_pool->consumer_index == 0) |
| 839 | tx_pool->consumer_index = |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 840 | adapter->req_tx_entries_per_subcrq - 1; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 841 | else |
| 842 | tx_pool->consumer_index--; |
| 843 | |
| 844 | tx_send_failed++; |
| 845 | tx_dropped++; |
| 846 | ret = NETDEV_TX_BUSY; |
| 847 | goto out; |
| 848 | } |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 849 | |
| 850 | atomic_inc(&tx_scrq->used); |
| 851 | |
| 852 | if (atomic_read(&tx_scrq->used) >= adapter->req_tx_entries_per_subcrq) { |
| 853 | netdev_info(netdev, "Stopping queue %d\n", queue_num); |
| 854 | netif_stop_subqueue(netdev, queue_num); |
| 855 | } |
| 856 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 857 | tx_packets++; |
| 858 | tx_bytes += skb->len; |
| 859 | txq->trans_start = jiffies; |
| 860 | ret = NETDEV_TX_OK; |
| 861 | |
| 862 | out: |
| 863 | netdev->stats.tx_dropped += tx_dropped; |
| 864 | netdev->stats.tx_bytes += tx_bytes; |
| 865 | netdev->stats.tx_packets += tx_packets; |
| 866 | adapter->tx_send_failed += tx_send_failed; |
| 867 | adapter->tx_map_failed += tx_map_failed; |
| 868 | |
| 869 | return ret; |
| 870 | } |
| 871 | |
| 872 | static void ibmvnic_set_multi(struct net_device *netdev) |
| 873 | { |
| 874 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 875 | struct netdev_hw_addr *ha; |
| 876 | union ibmvnic_crq crq; |
| 877 | |
| 878 | memset(&crq, 0, sizeof(crq)); |
| 879 | crq.request_capability.first = IBMVNIC_CRQ_CMD; |
| 880 | crq.request_capability.cmd = REQUEST_CAPABILITY; |
| 881 | |
| 882 | if (netdev->flags & IFF_PROMISC) { |
| 883 | if (!adapter->promisc_supported) |
| 884 | return; |
| 885 | } else { |
| 886 | if (netdev->flags & IFF_ALLMULTI) { |
| 887 | /* Accept all multicast */ |
| 888 | memset(&crq, 0, sizeof(crq)); |
| 889 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; |
| 890 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; |
| 891 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; |
| 892 | ibmvnic_send_crq(adapter, &crq); |
| 893 | } else if (netdev_mc_empty(netdev)) { |
| 894 | /* Reject all multicast */ |
| 895 | memset(&crq, 0, sizeof(crq)); |
| 896 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; |
| 897 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; |
| 898 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; |
| 899 | ibmvnic_send_crq(adapter, &crq); |
| 900 | } else { |
| 901 | /* Accept one or more multicast(s) */ |
| 902 | netdev_for_each_mc_addr(ha, netdev) { |
| 903 | memset(&crq, 0, sizeof(crq)); |
| 904 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; |
| 905 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; |
| 906 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; |
| 907 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], |
| 908 | ha->addr); |
| 909 | ibmvnic_send_crq(adapter, &crq); |
| 910 | } |
| 911 | } |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) |
| 916 | { |
| 917 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 918 | struct sockaddr *addr = p; |
| 919 | union ibmvnic_crq crq; |
| 920 | |
| 921 | if (!is_valid_ether_addr(addr->sa_data)) |
| 922 | return -EADDRNOTAVAIL; |
| 923 | |
| 924 | memset(&crq, 0, sizeof(crq)); |
| 925 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; |
| 926 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; |
| 927 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); |
| 928 | ibmvnic_send_crq(adapter, &crq); |
| 929 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ |
| 930 | return 0; |
| 931 | } |
| 932 | |
| 933 | static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) |
| 934 | { |
| 935 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 936 | |
| 937 | if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu) |
| 938 | return -EINVAL; |
| 939 | |
| 940 | netdev->mtu = new_mtu; |
| 941 | return 0; |
| 942 | } |
| 943 | |
| 944 | static void ibmvnic_tx_timeout(struct net_device *dev) |
| 945 | { |
| 946 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
| 947 | int rc; |
| 948 | |
| 949 | /* Adapter timed out, resetting it */ |
| 950 | release_sub_crqs(adapter); |
| 951 | rc = ibmvnic_reset_crq(adapter); |
| 952 | if (rc) |
| 953 | dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n"); |
| 954 | else |
| 955 | ibmvnic_send_crq_init(adapter); |
| 956 | } |
| 957 | |
| 958 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, |
| 959 | struct ibmvnic_rx_buff *rx_buff) |
| 960 | { |
| 961 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; |
| 962 | |
| 963 | rx_buff->skb = NULL; |
| 964 | |
| 965 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); |
| 966 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; |
| 967 | |
| 968 | atomic_dec(&pool->available); |
| 969 | } |
| 970 | |
| 971 | static int ibmvnic_poll(struct napi_struct *napi, int budget) |
| 972 | { |
| 973 | struct net_device *netdev = napi->dev; |
| 974 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 975 | int scrq_num = (int)(napi - adapter->napi); |
| 976 | int frames_processed = 0; |
| 977 | restart_poll: |
| 978 | while (frames_processed < budget) { |
| 979 | struct sk_buff *skb; |
| 980 | struct ibmvnic_rx_buff *rx_buff; |
| 981 | union sub_crq *next; |
| 982 | u32 length; |
| 983 | u16 offset; |
| 984 | u8 flags = 0; |
| 985 | |
| 986 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) |
| 987 | break; |
| 988 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); |
| 989 | rx_buff = |
| 990 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> |
| 991 | rx_comp.correlator); |
| 992 | /* do error checking */ |
| 993 | if (next->rx_comp.rc) { |
| 994 | netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); |
| 995 | /* free the entry */ |
| 996 | next->rx_comp.first = 0; |
Thomas Falcon | f1a8a34 | 2018-02-13 18:23:42 -0600 | [diff] [blame] | 997 | dev_kfree_skb_any(rx_buff->skb); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 998 | remove_buff_from_pool(adapter, rx_buff); |
| 999 | break; |
| 1000 | } |
| 1001 | |
| 1002 | length = be32_to_cpu(next->rx_comp.len); |
| 1003 | offset = be16_to_cpu(next->rx_comp.off_frame_data); |
| 1004 | flags = next->rx_comp.flags; |
| 1005 | skb = rx_buff->skb; |
| 1006 | skb_copy_to_linear_data(skb, rx_buff->data + offset, |
| 1007 | length); |
| 1008 | skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci); |
| 1009 | /* free the entry */ |
| 1010 | next->rx_comp.first = 0; |
| 1011 | remove_buff_from_pool(adapter, rx_buff); |
| 1012 | |
| 1013 | skb_put(skb, length); |
| 1014 | skb->protocol = eth_type_trans(skb, netdev); |
| 1015 | |
| 1016 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && |
| 1017 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { |
| 1018 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1019 | } |
| 1020 | |
| 1021 | length = skb->len; |
| 1022 | napi_gro_receive(napi, skb); /* send it up */ |
| 1023 | netdev->stats.rx_packets++; |
| 1024 | netdev->stats.rx_bytes += length; |
| 1025 | frames_processed++; |
| 1026 | } |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 1027 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1028 | |
| 1029 | if (frames_processed < budget) { |
| 1030 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); |
| 1031 | napi_complete(napi); |
| 1032 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
| 1033 | napi_reschedule(napi)) { |
| 1034 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); |
| 1035 | goto restart_poll; |
| 1036 | } |
| 1037 | } |
| 1038 | return frames_processed; |
| 1039 | } |
| 1040 | |
| 1041 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1042 | static void ibmvnic_netpoll_controller(struct net_device *dev) |
| 1043 | { |
| 1044 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
| 1045 | int i; |
| 1046 | |
| 1047 | replenish_pools(netdev_priv(dev)); |
| 1048 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 1049 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, |
| 1050 | adapter->rx_scrq[i]); |
| 1051 | } |
| 1052 | #endif |
| 1053 | |
| 1054 | static const struct net_device_ops ibmvnic_netdev_ops = { |
| 1055 | .ndo_open = ibmvnic_open, |
| 1056 | .ndo_stop = ibmvnic_close, |
| 1057 | .ndo_start_xmit = ibmvnic_xmit, |
| 1058 | .ndo_set_rx_mode = ibmvnic_set_multi, |
| 1059 | .ndo_set_mac_address = ibmvnic_set_mac, |
| 1060 | .ndo_validate_addr = eth_validate_addr, |
| 1061 | .ndo_change_mtu = ibmvnic_change_mtu, |
| 1062 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
| 1063 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1064 | .ndo_poll_controller = ibmvnic_netpoll_controller, |
| 1065 | #endif |
| 1066 | }; |
| 1067 | |
| 1068 | /* ethtool functions */ |
| 1069 | |
| 1070 | static int ibmvnic_get_settings(struct net_device *netdev, |
| 1071 | struct ethtool_cmd *cmd) |
| 1072 | { |
| 1073 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | |
| 1074 | SUPPORTED_FIBRE); |
| 1075 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
| 1076 | ADVERTISED_FIBRE); |
| 1077 | ethtool_cmd_speed_set(cmd, SPEED_1000); |
| 1078 | cmd->duplex = DUPLEX_FULL; |
| 1079 | cmd->port = PORT_FIBRE; |
| 1080 | cmd->phy_address = 0; |
| 1081 | cmd->transceiver = XCVR_INTERNAL; |
| 1082 | cmd->autoneg = AUTONEG_ENABLE; |
| 1083 | cmd->maxtxpkt = 0; |
| 1084 | cmd->maxrxpkt = 1; |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | static void ibmvnic_get_drvinfo(struct net_device *dev, |
| 1089 | struct ethtool_drvinfo *info) |
| 1090 | { |
| 1091 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); |
| 1092 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); |
| 1093 | } |
| 1094 | |
| 1095 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) |
| 1096 | { |
| 1097 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 1098 | |
| 1099 | return adapter->msg_enable; |
| 1100 | } |
| 1101 | |
| 1102 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) |
| 1103 | { |
| 1104 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 1105 | |
| 1106 | adapter->msg_enable = data; |
| 1107 | } |
| 1108 | |
| 1109 | static u32 ibmvnic_get_link(struct net_device *netdev) |
| 1110 | { |
| 1111 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 1112 | |
| 1113 | /* Don't need to send a query because we request a logical link up at |
| 1114 | * init and then we wait for link state indications |
| 1115 | */ |
| 1116 | return adapter->logical_link_state; |
| 1117 | } |
| 1118 | |
| 1119 | static void ibmvnic_get_ringparam(struct net_device *netdev, |
| 1120 | struct ethtool_ringparam *ring) |
| 1121 | { |
| 1122 | ring->rx_max_pending = 0; |
| 1123 | ring->tx_max_pending = 0; |
| 1124 | ring->rx_mini_max_pending = 0; |
| 1125 | ring->rx_jumbo_max_pending = 0; |
| 1126 | ring->rx_pending = 0; |
| 1127 | ring->tx_pending = 0; |
| 1128 | ring->rx_mini_pending = 0; |
| 1129 | ring->rx_jumbo_pending = 0; |
| 1130 | } |
| 1131 | |
| 1132 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
| 1133 | { |
| 1134 | int i; |
| 1135 | |
| 1136 | if (stringset != ETH_SS_STATS) |
| 1137 | return; |
| 1138 | |
| 1139 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) |
| 1140 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); |
| 1141 | } |
| 1142 | |
| 1143 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) |
| 1144 | { |
| 1145 | switch (sset) { |
| 1146 | case ETH_SS_STATS: |
| 1147 | return ARRAY_SIZE(ibmvnic_stats); |
| 1148 | default: |
| 1149 | return -EOPNOTSUPP; |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, |
| 1154 | struct ethtool_stats *stats, u64 *data) |
| 1155 | { |
| 1156 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
| 1157 | union ibmvnic_crq crq; |
| 1158 | int i; |
| 1159 | |
| 1160 | memset(&crq, 0, sizeof(crq)); |
| 1161 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; |
| 1162 | crq.request_statistics.cmd = REQUEST_STATISTICS; |
| 1163 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); |
| 1164 | crq.request_statistics.len = |
| 1165 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1166 | |
| 1167 | /* Wait for data to be written */ |
| 1168 | init_completion(&adapter->stats_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 1169 | ibmvnic_send_crq(adapter, &crq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1170 | wait_for_completion(&adapter->stats_done); |
| 1171 | |
| 1172 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) |
| 1173 | data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); |
| 1174 | } |
| 1175 | |
| 1176 | static const struct ethtool_ops ibmvnic_ethtool_ops = { |
| 1177 | .get_settings = ibmvnic_get_settings, |
| 1178 | .get_drvinfo = ibmvnic_get_drvinfo, |
| 1179 | .get_msglevel = ibmvnic_get_msglevel, |
| 1180 | .set_msglevel = ibmvnic_set_msglevel, |
| 1181 | .get_link = ibmvnic_get_link, |
| 1182 | .get_ringparam = ibmvnic_get_ringparam, |
| 1183 | .get_strings = ibmvnic_get_strings, |
| 1184 | .get_sset_count = ibmvnic_get_sset_count, |
| 1185 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, |
| 1186 | }; |
| 1187 | |
| 1188 | /* Routines for managing CRQs/sCRQs */ |
| 1189 | |
| 1190 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, |
| 1191 | struct ibmvnic_sub_crq_queue *scrq) |
| 1192 | { |
| 1193 | struct device *dev = &adapter->vdev->dev; |
| 1194 | long rc; |
| 1195 | |
| 1196 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); |
| 1197 | |
| 1198 | /* Close the sub-crqs */ |
| 1199 | do { |
| 1200 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, |
| 1201 | adapter->vdev->unit_address, |
| 1202 | scrq->crq_num); |
| 1203 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); |
| 1204 | |
| 1205 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
| 1206 | DMA_BIDIRECTIONAL); |
| 1207 | free_pages((unsigned long)scrq->msgs, 2); |
| 1208 | kfree(scrq); |
| 1209 | } |
| 1210 | |
| 1211 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter |
| 1212 | *adapter) |
| 1213 | { |
| 1214 | struct device *dev = &adapter->vdev->dev; |
| 1215 | struct ibmvnic_sub_crq_queue *scrq; |
| 1216 | int rc; |
| 1217 | |
| 1218 | scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC); |
| 1219 | if (!scrq) |
| 1220 | return NULL; |
| 1221 | |
Thomas Falcon | 12608c2 | 2016-10-17 15:28:09 -0500 | [diff] [blame] | 1222 | scrq->msgs = (union sub_crq *)__get_free_pages(GFP_ATOMIC, 2); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1223 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
| 1224 | if (!scrq->msgs) { |
| 1225 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); |
| 1226 | goto zero_page_failed; |
| 1227 | } |
| 1228 | |
| 1229 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, |
| 1230 | DMA_BIDIRECTIONAL); |
| 1231 | if (dma_mapping_error(dev, scrq->msg_token)) { |
| 1232 | dev_warn(dev, "Couldn't map crq queue messages page\n"); |
| 1233 | goto map_failed; |
| 1234 | } |
| 1235 | |
| 1236 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, |
| 1237 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); |
| 1238 | |
| 1239 | if (rc == H_RESOURCE) |
| 1240 | rc = ibmvnic_reset_crq(adapter); |
| 1241 | |
| 1242 | if (rc == H_CLOSED) { |
| 1243 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); |
| 1244 | } else if (rc) { |
| 1245 | dev_warn(dev, "Error %d registering sub-crq\n", rc); |
| 1246 | goto reg_failed; |
| 1247 | } |
| 1248 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1249 | scrq->adapter = adapter; |
| 1250 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); |
| 1251 | scrq->cur = 0; |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 1252 | atomic_set(&scrq->used, 0); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1253 | scrq->rx_skb_top = NULL; |
| 1254 | spin_lock_init(&scrq->lock); |
| 1255 | |
| 1256 | netdev_dbg(adapter->netdev, |
| 1257 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", |
| 1258 | scrq->crq_num, scrq->hw_irq, scrq->irq); |
| 1259 | |
| 1260 | return scrq; |
| 1261 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1262 | reg_failed: |
| 1263 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
| 1264 | DMA_BIDIRECTIONAL); |
| 1265 | map_failed: |
| 1266 | free_pages((unsigned long)scrq->msgs, 2); |
| 1267 | zero_page_failed: |
| 1268 | kfree(scrq); |
| 1269 | |
| 1270 | return NULL; |
| 1271 | } |
| 1272 | |
| 1273 | static void release_sub_crqs(struct ibmvnic_adapter *adapter) |
| 1274 | { |
| 1275 | int i; |
| 1276 | |
| 1277 | if (adapter->tx_scrq) { |
| 1278 | for (i = 0; i < adapter->req_tx_queues; i++) |
| 1279 | if (adapter->tx_scrq[i]) { |
| 1280 | free_irq(adapter->tx_scrq[i]->irq, |
| 1281 | adapter->tx_scrq[i]); |
Thomas Falcon | 88eb98a | 2016-07-06 15:35:16 -0500 | [diff] [blame] | 1282 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1283 | release_sub_crq_queue(adapter, |
| 1284 | adapter->tx_scrq[i]); |
| 1285 | } |
Nathan Fontenot | 27848be | 2017-03-15 23:38:07 -0400 | [diff] [blame] | 1286 | kfree(adapter->tx_scrq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1287 | adapter->tx_scrq = NULL; |
| 1288 | } |
| 1289 | |
| 1290 | if (adapter->rx_scrq) { |
| 1291 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 1292 | if (adapter->rx_scrq[i]) { |
| 1293 | free_irq(adapter->rx_scrq[i]->irq, |
| 1294 | adapter->rx_scrq[i]); |
Thomas Falcon | 88eb98a | 2016-07-06 15:35:16 -0500 | [diff] [blame] | 1295 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1296 | release_sub_crq_queue(adapter, |
| 1297 | adapter->rx_scrq[i]); |
| 1298 | } |
Nathan Fontenot | 27848be | 2017-03-15 23:38:07 -0400 | [diff] [blame] | 1299 | kfree(adapter->rx_scrq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1300 | adapter->rx_scrq = NULL; |
| 1301 | } |
| 1302 | |
| 1303 | adapter->requested_caps = 0; |
| 1304 | } |
| 1305 | |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1306 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter) |
| 1307 | { |
| 1308 | int i; |
| 1309 | |
| 1310 | if (adapter->tx_scrq) { |
| 1311 | for (i = 0; i < adapter->req_tx_queues; i++) |
| 1312 | if (adapter->tx_scrq[i]) |
| 1313 | release_sub_crq_queue(adapter, |
| 1314 | adapter->tx_scrq[i]); |
| 1315 | adapter->tx_scrq = NULL; |
| 1316 | } |
| 1317 | |
| 1318 | if (adapter->rx_scrq) { |
| 1319 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 1320 | if (adapter->rx_scrq[i]) |
| 1321 | release_sub_crq_queue(adapter, |
| 1322 | adapter->rx_scrq[i]); |
| 1323 | adapter->rx_scrq = NULL; |
| 1324 | } |
| 1325 | |
| 1326 | adapter->requested_caps = 0; |
| 1327 | } |
| 1328 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1329 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
| 1330 | struct ibmvnic_sub_crq_queue *scrq) |
| 1331 | { |
| 1332 | struct device *dev = &adapter->vdev->dev; |
| 1333 | unsigned long rc; |
| 1334 | |
| 1335 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, |
| 1336 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); |
| 1337 | if (rc) |
| 1338 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", |
| 1339 | scrq->hw_irq, rc); |
| 1340 | return rc; |
| 1341 | } |
| 1342 | |
| 1343 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, |
| 1344 | struct ibmvnic_sub_crq_queue *scrq) |
| 1345 | { |
| 1346 | struct device *dev = &adapter->vdev->dev; |
| 1347 | unsigned long rc; |
| 1348 | |
| 1349 | if (scrq->hw_irq > 0x100000000ULL) { |
| 1350 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); |
| 1351 | return 1; |
| 1352 | } |
| 1353 | |
| 1354 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, |
| 1355 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); |
| 1356 | if (rc) |
| 1357 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", |
| 1358 | scrq->hw_irq, rc); |
| 1359 | return rc; |
| 1360 | } |
| 1361 | |
| 1362 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, |
| 1363 | struct ibmvnic_sub_crq_queue *scrq) |
| 1364 | { |
| 1365 | struct device *dev = &adapter->vdev->dev; |
| 1366 | struct ibmvnic_tx_buff *txbuff; |
| 1367 | union sub_crq *next; |
| 1368 | int index; |
| 1369 | int i, j; |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 1370 | u8 first; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1371 | |
| 1372 | restart_loop: |
| 1373 | while (pending_scrq(adapter, scrq)) { |
| 1374 | unsigned int pool = scrq->pool_index; |
| 1375 | |
| 1376 | next = ibmvnic_next_scrq(adapter, scrq); |
| 1377 | for (i = 0; i < next->tx_comp.num_comps; i++) { |
| 1378 | if (next->tx_comp.rcs[i]) { |
| 1379 | dev_err(dev, "tx error %x\n", |
| 1380 | next->tx_comp.rcs[i]); |
| 1381 | continue; |
| 1382 | } |
| 1383 | index = be32_to_cpu(next->tx_comp.correlators[i]); |
| 1384 | txbuff = &adapter->tx_pool[pool].tx_buff[index]; |
| 1385 | |
| 1386 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { |
| 1387 | if (!txbuff->data_dma[j]) |
| 1388 | continue; |
| 1389 | |
| 1390 | txbuff->data_dma[j] = 0; |
| 1391 | txbuff->used_bounce = false; |
| 1392 | } |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 1393 | /* if sub_crq was sent indirectly */ |
| 1394 | first = txbuff->indir_arr[0].generic.first; |
| 1395 | if (first == IBMVNIC_CRQ_CMD) { |
| 1396 | dma_unmap_single(dev, txbuff->indir_dma, |
| 1397 | sizeof(txbuff->indir_arr), |
| 1398 | DMA_TO_DEVICE); |
| 1399 | } |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1400 | |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 1401 | if (txbuff->last_frag) { |
| 1402 | atomic_dec(&scrq->used); |
| 1403 | |
| 1404 | if (atomic_read(&scrq->used) <= |
| 1405 | (adapter->req_tx_entries_per_subcrq / 2) && |
| 1406 | netif_subqueue_stopped(adapter->netdev, |
| 1407 | txbuff->skb)) { |
| 1408 | netif_wake_subqueue(adapter->netdev, |
| 1409 | scrq->pool_index); |
| 1410 | netdev_dbg(adapter->netdev, |
| 1411 | "Started queue %d\n", |
| 1412 | scrq->pool_index); |
| 1413 | } |
| 1414 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1415 | dev_kfree_skb_any(txbuff->skb); |
Thomas Falcon | f3b1f93 | 2017-03-05 12:18:41 -0600 | [diff] [blame] | 1416 | } |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1417 | |
| 1418 | adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. |
| 1419 | producer_index] = index; |
| 1420 | adapter->tx_pool[pool].producer_index = |
| 1421 | (adapter->tx_pool[pool].producer_index + 1) % |
Thomas Falcon | f191e15 | 2017-03-05 12:18:42 -0600 | [diff] [blame] | 1422 | adapter->req_tx_entries_per_subcrq; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1423 | } |
| 1424 | /* remove tx_comp scrq*/ |
| 1425 | next->tx_comp.first = 0; |
| 1426 | } |
| 1427 | |
| 1428 | enable_scrq_irq(adapter, scrq); |
| 1429 | |
| 1430 | if (pending_scrq(adapter, scrq)) { |
| 1431 | disable_scrq_irq(adapter, scrq); |
| 1432 | goto restart_loop; |
| 1433 | } |
| 1434 | |
| 1435 | return 0; |
| 1436 | } |
| 1437 | |
| 1438 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) |
| 1439 | { |
| 1440 | struct ibmvnic_sub_crq_queue *scrq = instance; |
| 1441 | struct ibmvnic_adapter *adapter = scrq->adapter; |
| 1442 | |
| 1443 | disable_scrq_irq(adapter, scrq); |
| 1444 | ibmvnic_complete_tx(adapter, scrq); |
| 1445 | |
| 1446 | return IRQ_HANDLED; |
| 1447 | } |
| 1448 | |
| 1449 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) |
| 1450 | { |
| 1451 | struct ibmvnic_sub_crq_queue *scrq = instance; |
| 1452 | struct ibmvnic_adapter *adapter = scrq->adapter; |
| 1453 | |
| 1454 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { |
| 1455 | disable_scrq_irq(adapter, scrq); |
| 1456 | __napi_schedule(&adapter->napi[scrq->scrq_num]); |
| 1457 | } |
| 1458 | |
| 1459 | return IRQ_HANDLED; |
| 1460 | } |
| 1461 | |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1462 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
| 1463 | { |
| 1464 | struct device *dev = &adapter->vdev->dev; |
| 1465 | struct ibmvnic_sub_crq_queue *scrq; |
| 1466 | int i = 0, j = 0; |
| 1467 | int rc = 0; |
| 1468 | |
| 1469 | for (i = 0; i < adapter->req_tx_queues; i++) { |
| 1470 | scrq = adapter->tx_scrq[i]; |
| 1471 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); |
| 1472 | |
Michael Ellerman | 99c1790 | 2016-09-10 19:59:05 +1000 | [diff] [blame] | 1473 | if (!scrq->irq) { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1474 | rc = -EINVAL; |
| 1475 | dev_err(dev, "Error mapping irq\n"); |
| 1476 | goto req_tx_irq_failed; |
| 1477 | } |
| 1478 | |
| 1479 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, |
| 1480 | 0, "ibmvnic_tx", scrq); |
| 1481 | |
| 1482 | if (rc) { |
| 1483 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", |
| 1484 | scrq->irq, rc); |
| 1485 | irq_dispose_mapping(scrq->irq); |
| 1486 | goto req_rx_irq_failed; |
| 1487 | } |
| 1488 | } |
| 1489 | |
| 1490 | for (i = 0; i < adapter->req_rx_queues; i++) { |
| 1491 | scrq = adapter->rx_scrq[i]; |
| 1492 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); |
Michael Ellerman | 99c1790 | 2016-09-10 19:59:05 +1000 | [diff] [blame] | 1493 | if (!scrq->irq) { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1494 | rc = -EINVAL; |
| 1495 | dev_err(dev, "Error mapping irq\n"); |
| 1496 | goto req_rx_irq_failed; |
| 1497 | } |
| 1498 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, |
| 1499 | 0, "ibmvnic_rx", scrq); |
| 1500 | if (rc) { |
| 1501 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", |
| 1502 | scrq->irq, rc); |
| 1503 | irq_dispose_mapping(scrq->irq); |
| 1504 | goto req_rx_irq_failed; |
| 1505 | } |
| 1506 | } |
| 1507 | return rc; |
| 1508 | |
| 1509 | req_rx_irq_failed: |
Thomas Falcon | 8bf371e | 2016-10-27 12:28:52 -0500 | [diff] [blame] | 1510 | for (j = 0; j < i; j++) { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1511 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
| 1512 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); |
Thomas Falcon | 8bf371e | 2016-10-27 12:28:52 -0500 | [diff] [blame] | 1513 | } |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1514 | i = adapter->req_tx_queues; |
| 1515 | req_tx_irq_failed: |
Thomas Falcon | 8bf371e | 2016-10-27 12:28:52 -0500 | [diff] [blame] | 1516 | for (j = 0; j < i; j++) { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1517 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
| 1518 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); |
Thomas Falcon | 8bf371e | 2016-10-27 12:28:52 -0500 | [diff] [blame] | 1519 | } |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1520 | release_sub_crqs_no_irqs(adapter); |
| 1521 | return rc; |
| 1522 | } |
| 1523 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1524 | static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry) |
| 1525 | { |
| 1526 | struct device *dev = &adapter->vdev->dev; |
| 1527 | struct ibmvnic_sub_crq_queue **allqueues; |
| 1528 | int registered_queues = 0; |
| 1529 | union ibmvnic_crq crq; |
| 1530 | int total_queues; |
| 1531 | int more = 0; |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 1532 | int i; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1533 | |
| 1534 | if (!retry) { |
| 1535 | /* Sub-CRQ entries are 32 byte long */ |
| 1536 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); |
| 1537 | |
| 1538 | if (adapter->min_tx_entries_per_subcrq > entries_page || |
| 1539 | adapter->min_rx_add_entries_per_subcrq > entries_page) { |
| 1540 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); |
| 1541 | goto allqueues_failed; |
| 1542 | } |
| 1543 | |
| 1544 | /* Get the minimum between the queried max and the entries |
| 1545 | * that fit in our PAGE_SIZE |
| 1546 | */ |
| 1547 | adapter->req_tx_entries_per_subcrq = |
| 1548 | adapter->max_tx_entries_per_subcrq > entries_page ? |
| 1549 | entries_page : adapter->max_tx_entries_per_subcrq; |
| 1550 | adapter->req_rx_add_entries_per_subcrq = |
| 1551 | adapter->max_rx_add_entries_per_subcrq > entries_page ? |
| 1552 | entries_page : adapter->max_rx_add_entries_per_subcrq; |
| 1553 | |
John Allen | 6dbcd8f | 2016-11-07 14:27:28 -0600 | [diff] [blame] | 1554 | adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; |
| 1555 | adapter->req_rx_queues = adapter->opt_rx_comp_queues; |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 1556 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1557 | |
| 1558 | adapter->req_mtu = adapter->max_mtu; |
| 1559 | } |
| 1560 | |
| 1561 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; |
| 1562 | |
| 1563 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC); |
| 1564 | if (!allqueues) |
| 1565 | goto allqueues_failed; |
| 1566 | |
| 1567 | for (i = 0; i < total_queues; i++) { |
| 1568 | allqueues[i] = init_sub_crq_queue(adapter); |
| 1569 | if (!allqueues[i]) { |
| 1570 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); |
| 1571 | break; |
| 1572 | } |
| 1573 | registered_queues++; |
| 1574 | } |
| 1575 | |
| 1576 | /* Make sure we were able to register the minimum number of queues */ |
| 1577 | if (registered_queues < |
| 1578 | adapter->min_tx_queues + adapter->min_rx_queues) { |
| 1579 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); |
| 1580 | goto tx_failed; |
| 1581 | } |
| 1582 | |
| 1583 | /* Distribute the failed allocated queues*/ |
| 1584 | for (i = 0; i < total_queues - registered_queues + more ; i++) { |
| 1585 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); |
| 1586 | switch (i % 3) { |
| 1587 | case 0: |
| 1588 | if (adapter->req_rx_queues > adapter->min_rx_queues) |
| 1589 | adapter->req_rx_queues--; |
| 1590 | else |
| 1591 | more++; |
| 1592 | break; |
| 1593 | case 1: |
| 1594 | if (adapter->req_tx_queues > adapter->min_tx_queues) |
| 1595 | adapter->req_tx_queues--; |
| 1596 | else |
| 1597 | more++; |
| 1598 | break; |
| 1599 | } |
| 1600 | } |
| 1601 | |
| 1602 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, |
| 1603 | sizeof(*adapter->tx_scrq), GFP_ATOMIC); |
| 1604 | if (!adapter->tx_scrq) |
| 1605 | goto tx_failed; |
| 1606 | |
| 1607 | for (i = 0; i < adapter->req_tx_queues; i++) { |
| 1608 | adapter->tx_scrq[i] = allqueues[i]; |
| 1609 | adapter->tx_scrq[i]->pool_index = i; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1610 | } |
| 1611 | |
| 1612 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, |
| 1613 | sizeof(*adapter->rx_scrq), GFP_ATOMIC); |
| 1614 | if (!adapter->rx_scrq) |
| 1615 | goto rx_failed; |
| 1616 | |
| 1617 | for (i = 0; i < adapter->req_rx_queues; i++) { |
| 1618 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; |
| 1619 | adapter->rx_scrq[i]->scrq_num = i; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | memset(&crq, 0, sizeof(crq)); |
| 1623 | crq.request_capability.first = IBMVNIC_CRQ_CMD; |
| 1624 | crq.request_capability.cmd = REQUEST_CAPABILITY; |
| 1625 | |
| 1626 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1627 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1628 | ibmvnic_send_crq(adapter, &crq); |
| 1629 | |
| 1630 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1631 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1632 | ibmvnic_send_crq(adapter, &crq); |
| 1633 | |
| 1634 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1635 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1636 | ibmvnic_send_crq(adapter, &crq); |
| 1637 | |
| 1638 | crq.request_capability.capability = |
| 1639 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); |
| 1640 | crq.request_capability.number = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1641 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1642 | ibmvnic_send_crq(adapter, &crq); |
| 1643 | |
| 1644 | crq.request_capability.capability = |
| 1645 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); |
| 1646 | crq.request_capability.number = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1647 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1648 | ibmvnic_send_crq(adapter, &crq); |
| 1649 | |
| 1650 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1651 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1652 | ibmvnic_send_crq(adapter, &crq); |
| 1653 | |
| 1654 | if (adapter->netdev->flags & IFF_PROMISC) { |
| 1655 | if (adapter->promisc_supported) { |
| 1656 | crq.request_capability.capability = |
| 1657 | cpu_to_be16(PROMISC_REQUESTED); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1658 | crq.request_capability.number = cpu_to_be64(1); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1659 | ibmvnic_send_crq(adapter, &crq); |
| 1660 | } |
| 1661 | } else { |
| 1662 | crq.request_capability.capability = |
| 1663 | cpu_to_be16(PROMISC_REQUESTED); |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 1664 | crq.request_capability.number = cpu_to_be64(0); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1665 | ibmvnic_send_crq(adapter, &crq); |
| 1666 | } |
| 1667 | |
| 1668 | kfree(allqueues); |
| 1669 | |
| 1670 | return; |
| 1671 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1672 | rx_failed: |
| 1673 | kfree(adapter->tx_scrq); |
| 1674 | adapter->tx_scrq = NULL; |
| 1675 | tx_failed: |
| 1676 | for (i = 0; i < registered_queues; i++) |
| 1677 | release_sub_crq_queue(adapter, allqueues[i]); |
| 1678 | kfree(allqueues); |
| 1679 | allqueues_failed: |
| 1680 | ibmvnic_remove(adapter->vdev); |
| 1681 | } |
| 1682 | |
| 1683 | static int pending_scrq(struct ibmvnic_adapter *adapter, |
| 1684 | struct ibmvnic_sub_crq_queue *scrq) |
| 1685 | { |
| 1686 | union sub_crq *entry = &scrq->msgs[scrq->cur]; |
| 1687 | |
| 1688 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing) |
| 1689 | return 1; |
| 1690 | else |
| 1691 | return 0; |
| 1692 | } |
| 1693 | |
| 1694 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, |
| 1695 | struct ibmvnic_sub_crq_queue *scrq) |
| 1696 | { |
| 1697 | union sub_crq *entry; |
| 1698 | unsigned long flags; |
| 1699 | |
| 1700 | spin_lock_irqsave(&scrq->lock, flags); |
| 1701 | entry = &scrq->msgs[scrq->cur]; |
| 1702 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { |
| 1703 | if (++scrq->cur == scrq->size) |
| 1704 | scrq->cur = 0; |
| 1705 | } else { |
| 1706 | entry = NULL; |
| 1707 | } |
| 1708 | spin_unlock_irqrestore(&scrq->lock, flags); |
| 1709 | |
| 1710 | return entry; |
| 1711 | } |
| 1712 | |
| 1713 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) |
| 1714 | { |
| 1715 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
| 1716 | union ibmvnic_crq *crq; |
| 1717 | |
| 1718 | crq = &queue->msgs[queue->cur]; |
| 1719 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { |
| 1720 | if (++queue->cur == queue->size) |
| 1721 | queue->cur = 0; |
| 1722 | } else { |
| 1723 | crq = NULL; |
| 1724 | } |
| 1725 | |
| 1726 | return crq; |
| 1727 | } |
| 1728 | |
| 1729 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, |
| 1730 | union sub_crq *sub_crq) |
| 1731 | { |
| 1732 | unsigned int ua = adapter->vdev->unit_address; |
| 1733 | struct device *dev = &adapter->vdev->dev; |
| 1734 | u64 *u64_crq = (u64 *)sub_crq; |
| 1735 | int rc; |
| 1736 | |
| 1737 | netdev_dbg(adapter->netdev, |
| 1738 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", |
| 1739 | (unsigned long int)cpu_to_be64(remote_handle), |
| 1740 | (unsigned long int)cpu_to_be64(u64_crq[0]), |
| 1741 | (unsigned long int)cpu_to_be64(u64_crq[1]), |
| 1742 | (unsigned long int)cpu_to_be64(u64_crq[2]), |
| 1743 | (unsigned long int)cpu_to_be64(u64_crq[3])); |
| 1744 | |
| 1745 | /* Make sure the hypervisor sees the complete request */ |
| 1746 | mb(); |
| 1747 | |
| 1748 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, |
| 1749 | cpu_to_be64(remote_handle), |
| 1750 | cpu_to_be64(u64_crq[0]), |
| 1751 | cpu_to_be64(u64_crq[1]), |
| 1752 | cpu_to_be64(u64_crq[2]), |
| 1753 | cpu_to_be64(u64_crq[3])); |
| 1754 | |
| 1755 | if (rc) { |
| 1756 | if (rc == H_CLOSED) |
| 1757 | dev_warn(dev, "CRQ Queue closed\n"); |
| 1758 | dev_err(dev, "Send error (rc=%d)\n", rc); |
| 1759 | } |
| 1760 | |
| 1761 | return rc; |
| 1762 | } |
| 1763 | |
Thomas Falcon | ad7775d | 2016-04-01 17:20:34 -0500 | [diff] [blame] | 1764 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
| 1765 | u64 remote_handle, u64 ioba, u64 num_entries) |
| 1766 | { |
| 1767 | unsigned int ua = adapter->vdev->unit_address; |
| 1768 | struct device *dev = &adapter->vdev->dev; |
| 1769 | int rc; |
| 1770 | |
| 1771 | /* Make sure the hypervisor sees the complete request */ |
| 1772 | mb(); |
| 1773 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, |
| 1774 | cpu_to_be64(remote_handle), |
| 1775 | ioba, num_entries); |
| 1776 | |
| 1777 | if (rc) { |
| 1778 | if (rc == H_CLOSED) |
| 1779 | dev_warn(dev, "CRQ Queue closed\n"); |
| 1780 | dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); |
| 1781 | } |
| 1782 | |
| 1783 | return rc; |
| 1784 | } |
| 1785 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1786 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
| 1787 | union ibmvnic_crq *crq) |
| 1788 | { |
| 1789 | unsigned int ua = adapter->vdev->unit_address; |
| 1790 | struct device *dev = &adapter->vdev->dev; |
| 1791 | u64 *u64_crq = (u64 *)crq; |
| 1792 | int rc; |
| 1793 | |
| 1794 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", |
| 1795 | (unsigned long int)cpu_to_be64(u64_crq[0]), |
| 1796 | (unsigned long int)cpu_to_be64(u64_crq[1])); |
| 1797 | |
| 1798 | /* Make sure the hypervisor sees the complete request */ |
| 1799 | mb(); |
| 1800 | |
| 1801 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, |
| 1802 | cpu_to_be64(u64_crq[0]), |
| 1803 | cpu_to_be64(u64_crq[1])); |
| 1804 | |
| 1805 | if (rc) { |
| 1806 | if (rc == H_CLOSED) |
| 1807 | dev_warn(dev, "CRQ Queue closed\n"); |
| 1808 | dev_warn(dev, "Send error (rc=%d)\n", rc); |
| 1809 | } |
| 1810 | |
| 1811 | return rc; |
| 1812 | } |
| 1813 | |
| 1814 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) |
| 1815 | { |
| 1816 | union ibmvnic_crq crq; |
| 1817 | |
| 1818 | memset(&crq, 0, sizeof(crq)); |
| 1819 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; |
| 1820 | crq.generic.cmd = IBMVNIC_CRQ_INIT; |
| 1821 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); |
| 1822 | |
| 1823 | return ibmvnic_send_crq(adapter, &crq); |
| 1824 | } |
| 1825 | |
| 1826 | static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter) |
| 1827 | { |
| 1828 | union ibmvnic_crq crq; |
| 1829 | |
| 1830 | memset(&crq, 0, sizeof(crq)); |
| 1831 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; |
| 1832 | crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE; |
| 1833 | netdev_dbg(adapter->netdev, "Sending CRQ init complete\n"); |
| 1834 | |
| 1835 | return ibmvnic_send_crq(adapter, &crq); |
| 1836 | } |
| 1837 | |
| 1838 | static int send_version_xchg(struct ibmvnic_adapter *adapter) |
| 1839 | { |
| 1840 | union ibmvnic_crq crq; |
| 1841 | |
| 1842 | memset(&crq, 0, sizeof(crq)); |
| 1843 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; |
| 1844 | crq.version_exchange.cmd = VERSION_EXCHANGE; |
| 1845 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); |
| 1846 | |
| 1847 | return ibmvnic_send_crq(adapter, &crq); |
| 1848 | } |
| 1849 | |
| 1850 | static void send_login(struct ibmvnic_adapter *adapter) |
| 1851 | { |
| 1852 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; |
| 1853 | struct ibmvnic_login_buffer *login_buffer; |
| 1854 | struct ibmvnic_inflight_cmd *inflight_cmd; |
| 1855 | struct device *dev = &adapter->vdev->dev; |
| 1856 | dma_addr_t rsp_buffer_token; |
| 1857 | dma_addr_t buffer_token; |
| 1858 | size_t rsp_buffer_size; |
| 1859 | union ibmvnic_crq crq; |
| 1860 | unsigned long flags; |
| 1861 | size_t buffer_size; |
| 1862 | __be64 *tx_list_p; |
| 1863 | __be64 *rx_list_p; |
| 1864 | int i; |
| 1865 | |
| 1866 | buffer_size = |
| 1867 | sizeof(struct ibmvnic_login_buffer) + |
| 1868 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); |
| 1869 | |
| 1870 | login_buffer = kmalloc(buffer_size, GFP_ATOMIC); |
| 1871 | if (!login_buffer) |
| 1872 | goto buf_alloc_failed; |
| 1873 | |
| 1874 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, |
| 1875 | DMA_TO_DEVICE); |
| 1876 | if (dma_mapping_error(dev, buffer_token)) { |
| 1877 | dev_err(dev, "Couldn't map login buffer\n"); |
| 1878 | goto buf_map_failed; |
| 1879 | } |
| 1880 | |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 1881 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
| 1882 | sizeof(u64) * adapter->req_tx_queues + |
| 1883 | sizeof(u64) * adapter->req_rx_queues + |
| 1884 | sizeof(u64) * adapter->req_rx_queues + |
| 1885 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 1886 | |
| 1887 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); |
| 1888 | if (!login_rsp_buffer) |
| 1889 | goto buf_rsp_alloc_failed; |
| 1890 | |
| 1891 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, |
| 1892 | rsp_buffer_size, DMA_FROM_DEVICE); |
| 1893 | if (dma_mapping_error(dev, rsp_buffer_token)) { |
| 1894 | dev_err(dev, "Couldn't map login rsp buffer\n"); |
| 1895 | goto buf_rsp_map_failed; |
| 1896 | } |
| 1897 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); |
| 1898 | if (!inflight_cmd) { |
| 1899 | dev_err(dev, "Couldn't allocate inflight_cmd\n"); |
| 1900 | goto inflight_alloc_failed; |
| 1901 | } |
| 1902 | adapter->login_buf = login_buffer; |
| 1903 | adapter->login_buf_token = buffer_token; |
| 1904 | adapter->login_buf_sz = buffer_size; |
| 1905 | adapter->login_rsp_buf = login_rsp_buffer; |
| 1906 | adapter->login_rsp_buf_token = rsp_buffer_token; |
| 1907 | adapter->login_rsp_buf_sz = rsp_buffer_size; |
| 1908 | |
| 1909 | login_buffer->len = cpu_to_be32(buffer_size); |
| 1910 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); |
| 1911 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); |
| 1912 | login_buffer->off_txcomp_subcrqs = |
| 1913 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); |
| 1914 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); |
| 1915 | login_buffer->off_rxcomp_subcrqs = |
| 1916 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + |
| 1917 | sizeof(u64) * adapter->req_tx_queues); |
| 1918 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); |
| 1919 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); |
| 1920 | |
| 1921 | tx_list_p = (__be64 *)((char *)login_buffer + |
| 1922 | sizeof(struct ibmvnic_login_buffer)); |
| 1923 | rx_list_p = (__be64 *)((char *)login_buffer + |
| 1924 | sizeof(struct ibmvnic_login_buffer) + |
| 1925 | sizeof(u64) * adapter->req_tx_queues); |
| 1926 | |
| 1927 | for (i = 0; i < adapter->req_tx_queues; i++) { |
| 1928 | if (adapter->tx_scrq[i]) { |
| 1929 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> |
| 1930 | crq_num); |
| 1931 | } |
| 1932 | } |
| 1933 | |
| 1934 | for (i = 0; i < adapter->req_rx_queues; i++) { |
| 1935 | if (adapter->rx_scrq[i]) { |
| 1936 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> |
| 1937 | crq_num); |
| 1938 | } |
| 1939 | } |
| 1940 | |
| 1941 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); |
| 1942 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { |
| 1943 | netdev_dbg(adapter->netdev, "%016lx\n", |
| 1944 | ((unsigned long int *)(adapter->login_buf))[i]); |
| 1945 | } |
| 1946 | |
| 1947 | memset(&crq, 0, sizeof(crq)); |
| 1948 | crq.login.first = IBMVNIC_CRQ_CMD; |
| 1949 | crq.login.cmd = LOGIN; |
| 1950 | crq.login.ioba = cpu_to_be32(buffer_token); |
| 1951 | crq.login.len = cpu_to_be32(buffer_size); |
| 1952 | |
| 1953 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); |
| 1954 | |
| 1955 | spin_lock_irqsave(&adapter->inflight_lock, flags); |
| 1956 | list_add_tail(&inflight_cmd->list, &adapter->inflight); |
| 1957 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); |
| 1958 | |
| 1959 | ibmvnic_send_crq(adapter, &crq); |
| 1960 | |
| 1961 | return; |
| 1962 | |
| 1963 | inflight_alloc_failed: |
| 1964 | dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, |
| 1965 | DMA_FROM_DEVICE); |
| 1966 | buf_rsp_map_failed: |
| 1967 | kfree(login_rsp_buffer); |
| 1968 | buf_rsp_alloc_failed: |
| 1969 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); |
| 1970 | buf_map_failed: |
| 1971 | kfree(login_buffer); |
| 1972 | buf_alloc_failed: |
| 1973 | return; |
| 1974 | } |
| 1975 | |
| 1976 | static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, |
| 1977 | u32 len, u8 map_id) |
| 1978 | { |
| 1979 | union ibmvnic_crq crq; |
| 1980 | |
| 1981 | memset(&crq, 0, sizeof(crq)); |
| 1982 | crq.request_map.first = IBMVNIC_CRQ_CMD; |
| 1983 | crq.request_map.cmd = REQUEST_MAP; |
| 1984 | crq.request_map.map_id = map_id; |
| 1985 | crq.request_map.ioba = cpu_to_be32(addr); |
| 1986 | crq.request_map.len = cpu_to_be32(len); |
| 1987 | ibmvnic_send_crq(adapter, &crq); |
| 1988 | } |
| 1989 | |
| 1990 | static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) |
| 1991 | { |
| 1992 | union ibmvnic_crq crq; |
| 1993 | |
| 1994 | memset(&crq, 0, sizeof(crq)); |
| 1995 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; |
| 1996 | crq.request_unmap.cmd = REQUEST_UNMAP; |
| 1997 | crq.request_unmap.map_id = map_id; |
| 1998 | ibmvnic_send_crq(adapter, &crq); |
| 1999 | } |
| 2000 | |
| 2001 | static void send_map_query(struct ibmvnic_adapter *adapter) |
| 2002 | { |
| 2003 | union ibmvnic_crq crq; |
| 2004 | |
| 2005 | memset(&crq, 0, sizeof(crq)); |
| 2006 | crq.query_map.first = IBMVNIC_CRQ_CMD; |
| 2007 | crq.query_map.cmd = QUERY_MAP; |
| 2008 | ibmvnic_send_crq(adapter, &crq); |
| 2009 | } |
| 2010 | |
| 2011 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ |
| 2012 | static void send_cap_queries(struct ibmvnic_adapter *adapter) |
| 2013 | { |
| 2014 | union ibmvnic_crq crq; |
| 2015 | |
| 2016 | atomic_set(&adapter->running_cap_queries, 0); |
| 2017 | memset(&crq, 0, sizeof(crq)); |
| 2018 | crq.query_capability.first = IBMVNIC_CRQ_CMD; |
| 2019 | crq.query_capability.cmd = QUERY_CAPABILITY; |
| 2020 | |
| 2021 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); |
| 2022 | atomic_inc(&adapter->running_cap_queries); |
| 2023 | ibmvnic_send_crq(adapter, &crq); |
| 2024 | |
| 2025 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); |
| 2026 | atomic_inc(&adapter->running_cap_queries); |
| 2027 | ibmvnic_send_crq(adapter, &crq); |
| 2028 | |
| 2029 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); |
| 2030 | atomic_inc(&adapter->running_cap_queries); |
| 2031 | ibmvnic_send_crq(adapter, &crq); |
| 2032 | |
| 2033 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); |
| 2034 | atomic_inc(&adapter->running_cap_queries); |
| 2035 | ibmvnic_send_crq(adapter, &crq); |
| 2036 | |
| 2037 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); |
| 2038 | atomic_inc(&adapter->running_cap_queries); |
| 2039 | ibmvnic_send_crq(adapter, &crq); |
| 2040 | |
| 2041 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); |
| 2042 | atomic_inc(&adapter->running_cap_queries); |
| 2043 | ibmvnic_send_crq(adapter, &crq); |
| 2044 | |
| 2045 | crq.query_capability.capability = |
| 2046 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); |
| 2047 | atomic_inc(&adapter->running_cap_queries); |
| 2048 | ibmvnic_send_crq(adapter, &crq); |
| 2049 | |
| 2050 | crq.query_capability.capability = |
| 2051 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); |
| 2052 | atomic_inc(&adapter->running_cap_queries); |
| 2053 | ibmvnic_send_crq(adapter, &crq); |
| 2054 | |
| 2055 | crq.query_capability.capability = |
| 2056 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); |
| 2057 | atomic_inc(&adapter->running_cap_queries); |
| 2058 | ibmvnic_send_crq(adapter, &crq); |
| 2059 | |
| 2060 | crq.query_capability.capability = |
| 2061 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); |
| 2062 | atomic_inc(&adapter->running_cap_queries); |
| 2063 | ibmvnic_send_crq(adapter, &crq); |
| 2064 | |
| 2065 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); |
| 2066 | atomic_inc(&adapter->running_cap_queries); |
| 2067 | ibmvnic_send_crq(adapter, &crq); |
| 2068 | |
| 2069 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); |
| 2070 | atomic_inc(&adapter->running_cap_queries); |
| 2071 | ibmvnic_send_crq(adapter, &crq); |
| 2072 | |
| 2073 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); |
| 2074 | atomic_inc(&adapter->running_cap_queries); |
| 2075 | ibmvnic_send_crq(adapter, &crq); |
| 2076 | |
| 2077 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); |
| 2078 | atomic_inc(&adapter->running_cap_queries); |
| 2079 | ibmvnic_send_crq(adapter, &crq); |
| 2080 | |
| 2081 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); |
| 2082 | atomic_inc(&adapter->running_cap_queries); |
| 2083 | ibmvnic_send_crq(adapter, &crq); |
| 2084 | |
| 2085 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); |
| 2086 | atomic_inc(&adapter->running_cap_queries); |
| 2087 | ibmvnic_send_crq(adapter, &crq); |
| 2088 | |
| 2089 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); |
| 2090 | atomic_inc(&adapter->running_cap_queries); |
| 2091 | ibmvnic_send_crq(adapter, &crq); |
| 2092 | |
| 2093 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); |
| 2094 | atomic_inc(&adapter->running_cap_queries); |
| 2095 | ibmvnic_send_crq(adapter, &crq); |
| 2096 | |
| 2097 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); |
| 2098 | atomic_inc(&adapter->running_cap_queries); |
| 2099 | ibmvnic_send_crq(adapter, &crq); |
| 2100 | |
| 2101 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); |
| 2102 | atomic_inc(&adapter->running_cap_queries); |
| 2103 | ibmvnic_send_crq(adapter, &crq); |
| 2104 | |
| 2105 | crq.query_capability.capability = |
| 2106 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); |
| 2107 | atomic_inc(&adapter->running_cap_queries); |
| 2108 | ibmvnic_send_crq(adapter, &crq); |
| 2109 | |
| 2110 | crq.query_capability.capability = |
| 2111 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); |
| 2112 | atomic_inc(&adapter->running_cap_queries); |
| 2113 | ibmvnic_send_crq(adapter, &crq); |
| 2114 | |
| 2115 | crq.query_capability.capability = |
| 2116 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); |
| 2117 | atomic_inc(&adapter->running_cap_queries); |
| 2118 | ibmvnic_send_crq(adapter, &crq); |
| 2119 | |
| 2120 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); |
| 2121 | atomic_inc(&adapter->running_cap_queries); |
| 2122 | ibmvnic_send_crq(adapter, &crq); |
| 2123 | } |
| 2124 | |
| 2125 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) |
| 2126 | { |
| 2127 | struct device *dev = &adapter->vdev->dev; |
| 2128 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; |
| 2129 | union ibmvnic_crq crq; |
| 2130 | int i; |
| 2131 | |
| 2132 | dma_unmap_single(dev, adapter->ip_offload_tok, |
| 2133 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); |
| 2134 | |
| 2135 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); |
| 2136 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) |
| 2137 | netdev_dbg(adapter->netdev, "%016lx\n", |
| 2138 | ((unsigned long int *)(buf))[i]); |
| 2139 | |
| 2140 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); |
| 2141 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); |
| 2142 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", |
| 2143 | buf->tcp_ipv4_chksum); |
| 2144 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", |
| 2145 | buf->tcp_ipv6_chksum); |
| 2146 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", |
| 2147 | buf->udp_ipv4_chksum); |
| 2148 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", |
| 2149 | buf->udp_ipv6_chksum); |
| 2150 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", |
| 2151 | buf->large_tx_ipv4); |
| 2152 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", |
| 2153 | buf->large_tx_ipv6); |
| 2154 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", |
| 2155 | buf->large_rx_ipv4); |
| 2156 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", |
| 2157 | buf->large_rx_ipv6); |
| 2158 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", |
| 2159 | buf->max_ipv4_header_size); |
| 2160 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", |
| 2161 | buf->max_ipv6_header_size); |
| 2162 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", |
| 2163 | buf->max_tcp_header_size); |
| 2164 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", |
| 2165 | buf->max_udp_header_size); |
| 2166 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", |
| 2167 | buf->max_large_tx_size); |
| 2168 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", |
| 2169 | buf->max_large_rx_size); |
| 2170 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", |
| 2171 | buf->ipv6_extension_header); |
| 2172 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", |
| 2173 | buf->tcp_pseudosum_req); |
| 2174 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", |
| 2175 | buf->num_ipv6_ext_headers); |
| 2176 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", |
| 2177 | buf->off_ipv6_ext_headers); |
| 2178 | |
| 2179 | adapter->ip_offload_ctrl_tok = |
| 2180 | dma_map_single(dev, &adapter->ip_offload_ctrl, |
| 2181 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); |
| 2182 | |
| 2183 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { |
| 2184 | dev_err(dev, "Couldn't map ip offload control buffer\n"); |
| 2185 | return; |
| 2186 | } |
| 2187 | |
| 2188 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); |
| 2189 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; |
| 2190 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; |
| 2191 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; |
| 2192 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; |
| 2193 | |
| 2194 | /* large_tx/rx disabled for now, additional features needed */ |
| 2195 | adapter->ip_offload_ctrl.large_tx_ipv4 = 0; |
| 2196 | adapter->ip_offload_ctrl.large_tx_ipv6 = 0; |
| 2197 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; |
| 2198 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; |
| 2199 | |
| 2200 | adapter->netdev->features = NETIF_F_GSO; |
| 2201 | |
| 2202 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) |
| 2203 | adapter->netdev->features |= NETIF_F_IP_CSUM; |
| 2204 | |
| 2205 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) |
| 2206 | adapter->netdev->features |= NETIF_F_IPV6_CSUM; |
| 2207 | |
Thomas Falcon | 9be02cd | 2016-04-01 17:20:35 -0500 | [diff] [blame] | 2208 | if ((adapter->netdev->features & |
| 2209 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) |
| 2210 | adapter->netdev->features |= NETIF_F_RXCSUM; |
| 2211 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2212 | memset(&crq, 0, sizeof(crq)); |
| 2213 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; |
| 2214 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; |
| 2215 | crq.control_ip_offload.len = |
| 2216 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); |
| 2217 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); |
| 2218 | ibmvnic_send_crq(adapter, &crq); |
| 2219 | } |
| 2220 | |
| 2221 | static void handle_error_info_rsp(union ibmvnic_crq *crq, |
| 2222 | struct ibmvnic_adapter *adapter) |
| 2223 | { |
| 2224 | struct device *dev = &adapter->vdev->dev; |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 2225 | struct ibmvnic_error_buff *error_buff, *tmp; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2226 | unsigned long flags; |
| 2227 | bool found = false; |
| 2228 | int i; |
| 2229 | |
| 2230 | if (!crq->request_error_rsp.rc.code) { |
| 2231 | dev_info(dev, "Request Error Rsp returned with rc=%x\n", |
| 2232 | crq->request_error_rsp.rc.code); |
| 2233 | return; |
| 2234 | } |
| 2235 | |
| 2236 | spin_lock_irqsave(&adapter->error_list_lock, flags); |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 2237 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2238 | if (error_buff->error_id == crq->request_error_rsp.error_id) { |
| 2239 | found = true; |
| 2240 | list_del(&error_buff->list); |
| 2241 | break; |
| 2242 | } |
| 2243 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); |
| 2244 | |
| 2245 | if (!found) { |
| 2246 | dev_err(dev, "Couldn't find error id %x\n", |
Thomas Falcon | b5a1aa8 | 2017-05-23 21:53:26 -0400 | [diff] [blame] | 2247 | be32_to_cpu(crq->request_error_rsp.error_id)); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2248 | return; |
| 2249 | } |
| 2250 | |
| 2251 | dev_err(dev, "Detailed info for error id %x:", |
Thomas Falcon | b5a1aa8 | 2017-05-23 21:53:26 -0400 | [diff] [blame] | 2252 | be32_to_cpu(crq->request_error_rsp.error_id)); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2253 | |
| 2254 | for (i = 0; i < error_buff->len; i++) { |
| 2255 | pr_cont("%02x", (int)error_buff->buff[i]); |
| 2256 | if (i % 8 == 7) |
| 2257 | pr_cont(" "); |
| 2258 | } |
| 2259 | pr_cont("\n"); |
| 2260 | |
| 2261 | dma_unmap_single(dev, error_buff->dma, error_buff->len, |
| 2262 | DMA_FROM_DEVICE); |
| 2263 | kfree(error_buff->buff); |
| 2264 | kfree(error_buff); |
| 2265 | } |
| 2266 | |
| 2267 | static void handle_dump_size_rsp(union ibmvnic_crq *crq, |
| 2268 | struct ibmvnic_adapter *adapter) |
| 2269 | { |
| 2270 | int len = be32_to_cpu(crq->request_dump_size_rsp.len); |
| 2271 | struct ibmvnic_inflight_cmd *inflight_cmd; |
| 2272 | struct device *dev = &adapter->vdev->dev; |
| 2273 | union ibmvnic_crq newcrq; |
| 2274 | unsigned long flags; |
| 2275 | |
| 2276 | /* allocate and map buffer */ |
| 2277 | adapter->dump_data = kmalloc(len, GFP_KERNEL); |
| 2278 | if (!adapter->dump_data) { |
| 2279 | complete(&adapter->fw_done); |
| 2280 | return; |
| 2281 | } |
| 2282 | |
| 2283 | adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len, |
| 2284 | DMA_FROM_DEVICE); |
| 2285 | |
| 2286 | if (dma_mapping_error(dev, adapter->dump_data_token)) { |
| 2287 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 2288 | dev_err(dev, "Couldn't map dump data\n"); |
| 2289 | kfree(adapter->dump_data); |
| 2290 | complete(&adapter->fw_done); |
| 2291 | return; |
| 2292 | } |
| 2293 | |
| 2294 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); |
| 2295 | if (!inflight_cmd) { |
| 2296 | dma_unmap_single(dev, adapter->dump_data_token, len, |
| 2297 | DMA_FROM_DEVICE); |
| 2298 | kfree(adapter->dump_data); |
| 2299 | complete(&adapter->fw_done); |
| 2300 | return; |
| 2301 | } |
| 2302 | |
| 2303 | memset(&newcrq, 0, sizeof(newcrq)); |
| 2304 | newcrq.request_dump.first = IBMVNIC_CRQ_CMD; |
| 2305 | newcrq.request_dump.cmd = REQUEST_DUMP; |
| 2306 | newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token); |
| 2307 | newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size); |
| 2308 | |
| 2309 | memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq)); |
| 2310 | |
| 2311 | spin_lock_irqsave(&adapter->inflight_lock, flags); |
| 2312 | list_add_tail(&inflight_cmd->list, &adapter->inflight); |
| 2313 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); |
| 2314 | |
| 2315 | ibmvnic_send_crq(adapter, &newcrq); |
| 2316 | } |
| 2317 | |
| 2318 | static void handle_error_indication(union ibmvnic_crq *crq, |
| 2319 | struct ibmvnic_adapter *adapter) |
| 2320 | { |
| 2321 | int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz); |
| 2322 | struct ibmvnic_inflight_cmd *inflight_cmd; |
| 2323 | struct device *dev = &adapter->vdev->dev; |
| 2324 | struct ibmvnic_error_buff *error_buff; |
| 2325 | union ibmvnic_crq new_crq; |
| 2326 | unsigned long flags; |
| 2327 | |
| 2328 | dev_err(dev, "Firmware reports %serror id %x, cause %d\n", |
| 2329 | crq->error_indication. |
| 2330 | flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "", |
Thomas Falcon | b5a1aa8 | 2017-05-23 21:53:26 -0400 | [diff] [blame] | 2331 | be32_to_cpu(crq->error_indication.error_id), |
| 2332 | be16_to_cpu(crq->error_indication.error_cause)); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2333 | |
| 2334 | error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); |
| 2335 | if (!error_buff) |
| 2336 | return; |
| 2337 | |
| 2338 | error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); |
| 2339 | if (!error_buff->buff) { |
| 2340 | kfree(error_buff); |
| 2341 | return; |
| 2342 | } |
| 2343 | |
| 2344 | error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, |
| 2345 | DMA_FROM_DEVICE); |
| 2346 | if (dma_mapping_error(dev, error_buff->dma)) { |
| 2347 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 2348 | dev_err(dev, "Couldn't map error buffer\n"); |
| 2349 | kfree(error_buff->buff); |
| 2350 | kfree(error_buff); |
| 2351 | return; |
| 2352 | } |
| 2353 | |
| 2354 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); |
| 2355 | if (!inflight_cmd) { |
| 2356 | dma_unmap_single(dev, error_buff->dma, detail_len, |
| 2357 | DMA_FROM_DEVICE); |
| 2358 | kfree(error_buff->buff); |
| 2359 | kfree(error_buff); |
| 2360 | return; |
| 2361 | } |
| 2362 | |
| 2363 | error_buff->len = detail_len; |
| 2364 | error_buff->error_id = crq->error_indication.error_id; |
| 2365 | |
| 2366 | spin_lock_irqsave(&adapter->error_list_lock, flags); |
| 2367 | list_add_tail(&error_buff->list, &adapter->errors); |
| 2368 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); |
| 2369 | |
| 2370 | memset(&new_crq, 0, sizeof(new_crq)); |
| 2371 | new_crq.request_error_info.first = IBMVNIC_CRQ_CMD; |
| 2372 | new_crq.request_error_info.cmd = REQUEST_ERROR_INFO; |
| 2373 | new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); |
| 2374 | new_crq.request_error_info.len = cpu_to_be32(detail_len); |
| 2375 | new_crq.request_error_info.error_id = crq->error_indication.error_id; |
| 2376 | |
| 2377 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); |
| 2378 | |
| 2379 | spin_lock_irqsave(&adapter->inflight_lock, flags); |
| 2380 | list_add_tail(&inflight_cmd->list, &adapter->inflight); |
| 2381 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); |
| 2382 | |
| 2383 | ibmvnic_send_crq(adapter, &new_crq); |
| 2384 | } |
| 2385 | |
| 2386 | static void handle_change_mac_rsp(union ibmvnic_crq *crq, |
| 2387 | struct ibmvnic_adapter *adapter) |
| 2388 | { |
| 2389 | struct net_device *netdev = adapter->netdev; |
| 2390 | struct device *dev = &adapter->vdev->dev; |
| 2391 | long rc; |
| 2392 | |
| 2393 | rc = crq->change_mac_addr_rsp.rc.code; |
| 2394 | if (rc) { |
| 2395 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); |
| 2396 | return; |
| 2397 | } |
| 2398 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], |
| 2399 | ETH_ALEN); |
| 2400 | } |
| 2401 | |
| 2402 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, |
| 2403 | struct ibmvnic_adapter *adapter) |
| 2404 | { |
| 2405 | struct device *dev = &adapter->vdev->dev; |
| 2406 | u64 *req_value; |
| 2407 | char *name; |
| 2408 | |
| 2409 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
| 2410 | case REQ_TX_QUEUES: |
| 2411 | req_value = &adapter->req_tx_queues; |
| 2412 | name = "tx"; |
| 2413 | break; |
| 2414 | case REQ_RX_QUEUES: |
| 2415 | req_value = &adapter->req_rx_queues; |
| 2416 | name = "rx"; |
| 2417 | break; |
| 2418 | case REQ_RX_ADD_QUEUES: |
| 2419 | req_value = &adapter->req_rx_add_queues; |
| 2420 | name = "rx_add"; |
| 2421 | break; |
| 2422 | case REQ_TX_ENTRIES_PER_SUBCRQ: |
| 2423 | req_value = &adapter->req_tx_entries_per_subcrq; |
| 2424 | name = "tx_entries_per_subcrq"; |
| 2425 | break; |
| 2426 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: |
| 2427 | req_value = &adapter->req_rx_add_entries_per_subcrq; |
| 2428 | name = "rx_add_entries_per_subcrq"; |
| 2429 | break; |
| 2430 | case REQ_MTU: |
| 2431 | req_value = &adapter->req_mtu; |
| 2432 | name = "mtu"; |
| 2433 | break; |
| 2434 | case PROMISC_REQUESTED: |
| 2435 | req_value = &adapter->promisc; |
| 2436 | name = "promisc"; |
| 2437 | break; |
| 2438 | default: |
| 2439 | dev_err(dev, "Got invalid cap request rsp %d\n", |
| 2440 | crq->request_capability.capability); |
| 2441 | return; |
| 2442 | } |
| 2443 | |
| 2444 | switch (crq->request_capability_rsp.rc.code) { |
| 2445 | case SUCCESS: |
| 2446 | break; |
| 2447 | case PARTIALSUCCESS: |
| 2448 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", |
| 2449 | *req_value, |
Thomas Falcon | 65e7272 | 2017-05-23 21:53:27 -0400 | [diff] [blame] | 2450 | (long int)be64_to_cpu(crq->request_capability_rsp. |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2451 | number), name); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 2452 | release_sub_crqs_no_irqs(adapter); |
Thomas Falcon | 65e7272 | 2017-05-23 21:53:27 -0400 | [diff] [blame] | 2453 | *req_value = be64_to_cpu(crq->request_capability_rsp.number); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 2454 | init_sub_crqs(adapter, 1); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2455 | return; |
| 2456 | default: |
| 2457 | dev_err(dev, "Error %d in request cap rsp\n", |
| 2458 | crq->request_capability_rsp.rc.code); |
| 2459 | return; |
| 2460 | } |
| 2461 | |
| 2462 | /* Done receiving requested capabilities, query IP offload support */ |
| 2463 | if (++adapter->requested_caps == 7) { |
| 2464 | union ibmvnic_crq newcrq; |
| 2465 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); |
| 2466 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = |
| 2467 | &adapter->ip_offload_buf; |
| 2468 | |
| 2469 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
| 2470 | buf_sz, |
| 2471 | DMA_FROM_DEVICE); |
| 2472 | |
| 2473 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { |
| 2474 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 2475 | dev_err(dev, "Couldn't map offload buffer\n"); |
| 2476 | return; |
| 2477 | } |
| 2478 | |
| 2479 | memset(&newcrq, 0, sizeof(newcrq)); |
| 2480 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; |
| 2481 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; |
| 2482 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); |
| 2483 | newcrq.query_ip_offload.ioba = |
| 2484 | cpu_to_be32(adapter->ip_offload_tok); |
| 2485 | |
| 2486 | ibmvnic_send_crq(adapter, &newcrq); |
| 2487 | } |
| 2488 | } |
| 2489 | |
| 2490 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, |
| 2491 | struct ibmvnic_adapter *adapter) |
| 2492 | { |
| 2493 | struct device *dev = &adapter->vdev->dev; |
| 2494 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; |
| 2495 | struct ibmvnic_login_buffer *login = adapter->login_buf; |
| 2496 | union ibmvnic_crq crq; |
| 2497 | int i; |
| 2498 | |
| 2499 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, |
| 2500 | DMA_BIDIRECTIONAL); |
| 2501 | dma_unmap_single(dev, adapter->login_rsp_buf_token, |
| 2502 | adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); |
| 2503 | |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 2504 | /* If the number of queues requested can't be allocated by the |
| 2505 | * server, the login response will return with code 1. We will need |
| 2506 | * to resend the login buffer with fewer queues requested. |
| 2507 | */ |
| 2508 | if (login_rsp_crq->generic.rc.code) { |
| 2509 | adapter->renegotiate = true; |
| 2510 | complete(&adapter->init_done); |
| 2511 | return 0; |
| 2512 | } |
| 2513 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2514 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
| 2515 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { |
| 2516 | netdev_dbg(adapter->netdev, "%016lx\n", |
| 2517 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); |
| 2518 | } |
| 2519 | |
| 2520 | /* Sanity checks */ |
| 2521 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || |
| 2522 | (be32_to_cpu(login->num_rxcomp_subcrqs) * |
| 2523 | adapter->req_rx_add_queues != |
| 2524 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { |
| 2525 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); |
| 2526 | ibmvnic_remove(adapter->vdev); |
| 2527 | return -EIO; |
| 2528 | } |
| 2529 | complete(&adapter->init_done); |
| 2530 | |
| 2531 | memset(&crq, 0, sizeof(crq)); |
| 2532 | crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD; |
| 2533 | crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM; |
| 2534 | ibmvnic_send_crq(adapter, &crq); |
| 2535 | |
| 2536 | return 0; |
| 2537 | } |
| 2538 | |
| 2539 | static void handle_request_map_rsp(union ibmvnic_crq *crq, |
| 2540 | struct ibmvnic_adapter *adapter) |
| 2541 | { |
| 2542 | struct device *dev = &adapter->vdev->dev; |
| 2543 | u8 map_id = crq->request_map_rsp.map_id; |
| 2544 | int tx_subcrqs; |
| 2545 | int rx_subcrqs; |
| 2546 | long rc; |
| 2547 | int i; |
| 2548 | |
| 2549 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); |
| 2550 | rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
| 2551 | |
| 2552 | rc = crq->request_map_rsp.rc.code; |
| 2553 | if (rc) { |
| 2554 | dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc); |
| 2555 | adapter->map_id--; |
| 2556 | /* need to find and zero tx/rx_pool map_id */ |
| 2557 | for (i = 0; i < tx_subcrqs; i++) { |
| 2558 | if (adapter->tx_pool[i].long_term_buff.map_id == map_id) |
| 2559 | adapter->tx_pool[i].long_term_buff.map_id = 0; |
| 2560 | } |
| 2561 | for (i = 0; i < rx_subcrqs; i++) { |
| 2562 | if (adapter->rx_pool[i].long_term_buff.map_id == map_id) |
| 2563 | adapter->rx_pool[i].long_term_buff.map_id = 0; |
| 2564 | } |
| 2565 | } |
| 2566 | complete(&adapter->fw_done); |
| 2567 | } |
| 2568 | |
| 2569 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, |
| 2570 | struct ibmvnic_adapter *adapter) |
| 2571 | { |
| 2572 | struct device *dev = &adapter->vdev->dev; |
| 2573 | long rc; |
| 2574 | |
| 2575 | rc = crq->request_unmap_rsp.rc.code; |
| 2576 | if (rc) |
| 2577 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); |
| 2578 | } |
| 2579 | |
| 2580 | static void handle_query_map_rsp(union ibmvnic_crq *crq, |
| 2581 | struct ibmvnic_adapter *adapter) |
| 2582 | { |
| 2583 | struct net_device *netdev = adapter->netdev; |
| 2584 | struct device *dev = &adapter->vdev->dev; |
| 2585 | long rc; |
| 2586 | |
| 2587 | rc = crq->query_map_rsp.rc.code; |
| 2588 | if (rc) { |
| 2589 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); |
| 2590 | return; |
| 2591 | } |
| 2592 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", |
| 2593 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, |
| 2594 | crq->query_map_rsp.free_pages); |
| 2595 | } |
| 2596 | |
| 2597 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, |
| 2598 | struct ibmvnic_adapter *adapter) |
| 2599 | { |
| 2600 | struct net_device *netdev = adapter->netdev; |
| 2601 | struct device *dev = &adapter->vdev->dev; |
| 2602 | long rc; |
| 2603 | |
| 2604 | atomic_dec(&adapter->running_cap_queries); |
| 2605 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
| 2606 | atomic_read(&adapter->running_cap_queries)); |
| 2607 | rc = crq->query_capability.rc.code; |
| 2608 | if (rc) { |
| 2609 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); |
| 2610 | goto out; |
| 2611 | } |
| 2612 | |
| 2613 | switch (be16_to_cpu(crq->query_capability.capability)) { |
| 2614 | case MIN_TX_QUEUES: |
| 2615 | adapter->min_tx_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2616 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2617 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
| 2618 | adapter->min_tx_queues); |
| 2619 | break; |
| 2620 | case MIN_RX_QUEUES: |
| 2621 | adapter->min_rx_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2622 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2623 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
| 2624 | adapter->min_rx_queues); |
| 2625 | break; |
| 2626 | case MIN_RX_ADD_QUEUES: |
| 2627 | adapter->min_rx_add_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2628 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2629 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
| 2630 | adapter->min_rx_add_queues); |
| 2631 | break; |
| 2632 | case MAX_TX_QUEUES: |
| 2633 | adapter->max_tx_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2634 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2635 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
| 2636 | adapter->max_tx_queues); |
| 2637 | break; |
| 2638 | case MAX_RX_QUEUES: |
| 2639 | adapter->max_rx_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2640 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2641 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
| 2642 | adapter->max_rx_queues); |
| 2643 | break; |
| 2644 | case MAX_RX_ADD_QUEUES: |
| 2645 | adapter->max_rx_add_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2646 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2647 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
| 2648 | adapter->max_rx_add_queues); |
| 2649 | break; |
| 2650 | case MIN_TX_ENTRIES_PER_SUBCRQ: |
| 2651 | adapter->min_tx_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2652 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2653 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
| 2654 | adapter->min_tx_entries_per_subcrq); |
| 2655 | break; |
| 2656 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: |
| 2657 | adapter->min_rx_add_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2658 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2659 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
| 2660 | adapter->min_rx_add_entries_per_subcrq); |
| 2661 | break; |
| 2662 | case MAX_TX_ENTRIES_PER_SUBCRQ: |
| 2663 | adapter->max_tx_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2664 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2665 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
| 2666 | adapter->max_tx_entries_per_subcrq); |
| 2667 | break; |
| 2668 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: |
| 2669 | adapter->max_rx_add_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2670 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2671 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
| 2672 | adapter->max_rx_add_entries_per_subcrq); |
| 2673 | break; |
| 2674 | case TCP_IP_OFFLOAD: |
| 2675 | adapter->tcp_ip_offload = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2676 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2677 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
| 2678 | adapter->tcp_ip_offload); |
| 2679 | break; |
| 2680 | case PROMISC_SUPPORTED: |
| 2681 | adapter->promisc_supported = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2682 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2683 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
| 2684 | adapter->promisc_supported); |
| 2685 | break; |
| 2686 | case MIN_MTU: |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2687 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2688 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
| 2689 | break; |
| 2690 | case MAX_MTU: |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2691 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2692 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
| 2693 | break; |
| 2694 | case MAX_MULTICAST_FILTERS: |
| 2695 | adapter->max_multicast_filters = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2696 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2697 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
| 2698 | adapter->max_multicast_filters); |
| 2699 | break; |
| 2700 | case VLAN_HEADER_INSERTION: |
| 2701 | adapter->vlan_header_insertion = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2702 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2703 | if (adapter->vlan_header_insertion) |
| 2704 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; |
| 2705 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", |
| 2706 | adapter->vlan_header_insertion); |
| 2707 | break; |
| 2708 | case MAX_TX_SG_ENTRIES: |
| 2709 | adapter->max_tx_sg_entries = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2710 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2711 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
| 2712 | adapter->max_tx_sg_entries); |
| 2713 | break; |
| 2714 | case RX_SG_SUPPORTED: |
| 2715 | adapter->rx_sg_supported = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2716 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2717 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
| 2718 | adapter->rx_sg_supported); |
| 2719 | break; |
| 2720 | case OPT_TX_COMP_SUB_QUEUES: |
| 2721 | adapter->opt_tx_comp_sub_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2722 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2723 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
| 2724 | adapter->opt_tx_comp_sub_queues); |
| 2725 | break; |
| 2726 | case OPT_RX_COMP_QUEUES: |
| 2727 | adapter->opt_rx_comp_queues = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2728 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2729 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
| 2730 | adapter->opt_rx_comp_queues); |
| 2731 | break; |
| 2732 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: |
| 2733 | adapter->opt_rx_bufadd_q_per_rx_comp_q = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2734 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2735 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
| 2736 | adapter->opt_rx_bufadd_q_per_rx_comp_q); |
| 2737 | break; |
| 2738 | case OPT_TX_ENTRIES_PER_SUBCRQ: |
| 2739 | adapter->opt_tx_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2740 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2741 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
| 2742 | adapter->opt_tx_entries_per_subcrq); |
| 2743 | break; |
| 2744 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: |
| 2745 | adapter->opt_rxba_entries_per_subcrq = |
Thomas Falcon | de89e85 | 2016-03-01 10:20:09 -0600 | [diff] [blame] | 2746 | be64_to_cpu(crq->query_capability.number); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2747 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
| 2748 | adapter->opt_rxba_entries_per_subcrq); |
| 2749 | break; |
| 2750 | case TX_RX_DESC_REQ: |
| 2751 | adapter->tx_rx_desc_req = crq->query_capability.number; |
| 2752 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", |
| 2753 | adapter->tx_rx_desc_req); |
| 2754 | break; |
| 2755 | |
| 2756 | default: |
| 2757 | netdev_err(netdev, "Got invalid cap rsp %d\n", |
| 2758 | crq->query_capability.capability); |
| 2759 | } |
| 2760 | |
| 2761 | out: |
| 2762 | if (atomic_read(&adapter->running_cap_queries) == 0) |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 2763 | init_sub_crqs(adapter, 0); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2764 | /* We're done querying the capabilities, initialize sub-crqs */ |
| 2765 | } |
| 2766 | |
| 2767 | static void handle_control_ras_rsp(union ibmvnic_crq *crq, |
| 2768 | struct ibmvnic_adapter *adapter) |
| 2769 | { |
| 2770 | u8 correlator = crq->control_ras_rsp.correlator; |
| 2771 | struct device *dev = &adapter->vdev->dev; |
| 2772 | bool found = false; |
| 2773 | int i; |
| 2774 | |
| 2775 | if (crq->control_ras_rsp.rc.code) { |
| 2776 | dev_warn(dev, "Control ras failed rc=%d\n", |
| 2777 | crq->control_ras_rsp.rc.code); |
| 2778 | return; |
| 2779 | } |
| 2780 | |
| 2781 | for (i = 0; i < adapter->ras_comp_num; i++) { |
| 2782 | if (adapter->ras_comps[i].correlator == correlator) { |
| 2783 | found = true; |
| 2784 | break; |
| 2785 | } |
| 2786 | } |
| 2787 | |
| 2788 | if (!found) { |
| 2789 | dev_warn(dev, "Correlator not found on control_ras_rsp\n"); |
| 2790 | return; |
| 2791 | } |
| 2792 | |
| 2793 | switch (crq->control_ras_rsp.op) { |
| 2794 | case IBMVNIC_TRACE_LEVEL: |
| 2795 | adapter->ras_comps[i].trace_level = crq->control_ras.level; |
| 2796 | break; |
| 2797 | case IBMVNIC_ERROR_LEVEL: |
| 2798 | adapter->ras_comps[i].error_check_level = |
| 2799 | crq->control_ras.level; |
| 2800 | break; |
| 2801 | case IBMVNIC_TRACE_PAUSE: |
| 2802 | adapter->ras_comp_int[i].paused = 1; |
| 2803 | break; |
| 2804 | case IBMVNIC_TRACE_RESUME: |
| 2805 | adapter->ras_comp_int[i].paused = 0; |
| 2806 | break; |
| 2807 | case IBMVNIC_TRACE_ON: |
| 2808 | adapter->ras_comps[i].trace_on = 1; |
| 2809 | break; |
| 2810 | case IBMVNIC_TRACE_OFF: |
| 2811 | adapter->ras_comps[i].trace_on = 0; |
| 2812 | break; |
| 2813 | case IBMVNIC_CHG_TRACE_BUFF_SZ: |
| 2814 | /* trace_buff_sz is 3 bytes, stuff it into an int */ |
| 2815 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0; |
| 2816 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] = |
| 2817 | crq->control_ras_rsp.trace_buff_sz[0]; |
| 2818 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] = |
| 2819 | crq->control_ras_rsp.trace_buff_sz[1]; |
| 2820 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] = |
| 2821 | crq->control_ras_rsp.trace_buff_sz[2]; |
| 2822 | break; |
| 2823 | default: |
| 2824 | dev_err(dev, "invalid op %d on control_ras_rsp", |
| 2825 | crq->control_ras_rsp.op); |
| 2826 | } |
| 2827 | } |
| 2828 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2829 | static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len, |
| 2830 | loff_t *ppos) |
| 2831 | { |
| 2832 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2833 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2834 | struct device *dev = &adapter->vdev->dev; |
| 2835 | struct ibmvnic_fw_trace_entry *trace; |
| 2836 | int num = ras_comp_int->num; |
| 2837 | union ibmvnic_crq crq; |
| 2838 | dma_addr_t trace_tok; |
| 2839 | |
| 2840 | if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) |
| 2841 | return 0; |
| 2842 | |
| 2843 | trace = |
| 2844 | dma_alloc_coherent(dev, |
| 2845 | be32_to_cpu(adapter->ras_comps[num]. |
| 2846 | trace_buff_size), &trace_tok, |
| 2847 | GFP_KERNEL); |
| 2848 | if (!trace) { |
| 2849 | dev_err(dev, "Couldn't alloc trace buffer\n"); |
| 2850 | return 0; |
| 2851 | } |
| 2852 | |
| 2853 | memset(&crq, 0, sizeof(crq)); |
| 2854 | crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD; |
| 2855 | crq.collect_fw_trace.cmd = COLLECT_FW_TRACE; |
| 2856 | crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator; |
| 2857 | crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok); |
| 2858 | crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2859 | |
| 2860 | init_completion(&adapter->fw_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 2861 | ibmvnic_send_crq(adapter, &crq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2862 | wait_for_completion(&adapter->fw_done); |
| 2863 | |
| 2864 | if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) |
| 2865 | len = |
| 2866 | be32_to_cpu(adapter->ras_comps[num].trace_buff_size) - |
| 2867 | *ppos; |
| 2868 | |
| 2869 | copy_to_user(user_buf, &((u8 *)trace)[*ppos], len); |
| 2870 | |
| 2871 | dma_free_coherent(dev, |
| 2872 | be32_to_cpu(adapter->ras_comps[num].trace_buff_size), |
| 2873 | trace, trace_tok); |
| 2874 | *ppos += len; |
| 2875 | return len; |
| 2876 | } |
| 2877 | |
| 2878 | static const struct file_operations trace_ops = { |
| 2879 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 2880 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2881 | .read = trace_read, |
| 2882 | }; |
| 2883 | |
| 2884 | static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len, |
| 2885 | loff_t *ppos) |
| 2886 | { |
| 2887 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2888 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2889 | int num = ras_comp_int->num; |
| 2890 | char buff[5]; /* 1 or 0 plus \n and \0 */ |
| 2891 | int size; |
| 2892 | |
| 2893 | size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused); |
| 2894 | |
| 2895 | if (*ppos >= size) |
| 2896 | return 0; |
| 2897 | |
| 2898 | copy_to_user(user_buf, buff, size); |
| 2899 | *ppos += size; |
| 2900 | return size; |
| 2901 | } |
| 2902 | |
| 2903 | static ssize_t paused_write(struct file *file, const char __user *user_buf, |
| 2904 | size_t len, loff_t *ppos) |
| 2905 | { |
| 2906 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2907 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2908 | int num = ras_comp_int->num; |
| 2909 | union ibmvnic_crq crq; |
| 2910 | unsigned long val; |
| 2911 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 2912 | |
| 2913 | copy_from_user(buff, user_buf, sizeof(buff)); |
| 2914 | val = kstrtoul(buff, 10, NULL); |
| 2915 | |
| 2916 | adapter->ras_comp_int[num].paused = val ? 1 : 0; |
| 2917 | |
| 2918 | memset(&crq, 0, sizeof(crq)); |
| 2919 | crq.control_ras.first = IBMVNIC_CRQ_CMD; |
| 2920 | crq.control_ras.cmd = CONTROL_RAS; |
| 2921 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; |
| 2922 | crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME; |
| 2923 | ibmvnic_send_crq(adapter, &crq); |
| 2924 | |
| 2925 | return len; |
| 2926 | } |
| 2927 | |
| 2928 | static const struct file_operations paused_ops = { |
| 2929 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 2930 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2931 | .read = paused_read, |
| 2932 | .write = paused_write, |
| 2933 | }; |
| 2934 | |
| 2935 | static ssize_t tracing_read(struct file *file, char __user *user_buf, |
| 2936 | size_t len, loff_t *ppos) |
| 2937 | { |
| 2938 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2939 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2940 | int num = ras_comp_int->num; |
| 2941 | char buff[5]; /* 1 or 0 plus \n and \0 */ |
| 2942 | int size; |
| 2943 | |
| 2944 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on); |
| 2945 | |
| 2946 | if (*ppos >= size) |
| 2947 | return 0; |
| 2948 | |
| 2949 | copy_to_user(user_buf, buff, size); |
| 2950 | *ppos += size; |
| 2951 | return size; |
| 2952 | } |
| 2953 | |
| 2954 | static ssize_t tracing_write(struct file *file, const char __user *user_buf, |
| 2955 | size_t len, loff_t *ppos) |
| 2956 | { |
| 2957 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2958 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2959 | int num = ras_comp_int->num; |
| 2960 | union ibmvnic_crq crq; |
| 2961 | unsigned long val; |
| 2962 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 2963 | |
| 2964 | copy_from_user(buff, user_buf, sizeof(buff)); |
| 2965 | val = kstrtoul(buff, 10, NULL); |
| 2966 | |
| 2967 | memset(&crq, 0, sizeof(crq)); |
| 2968 | crq.control_ras.first = IBMVNIC_CRQ_CMD; |
| 2969 | crq.control_ras.cmd = CONTROL_RAS; |
| 2970 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; |
| 2971 | crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF; |
| 2972 | |
| 2973 | return len; |
| 2974 | } |
| 2975 | |
| 2976 | static const struct file_operations tracing_ops = { |
| 2977 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 2978 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 2979 | .read = tracing_read, |
| 2980 | .write = tracing_write, |
| 2981 | }; |
| 2982 | |
| 2983 | static ssize_t error_level_read(struct file *file, char __user *user_buf, |
| 2984 | size_t len, loff_t *ppos) |
| 2985 | { |
| 2986 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 2987 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 2988 | int num = ras_comp_int->num; |
| 2989 | char buff[5]; /* decimal max char plus \n and \0 */ |
| 2990 | int size; |
| 2991 | |
| 2992 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level); |
| 2993 | |
| 2994 | if (*ppos >= size) |
| 2995 | return 0; |
| 2996 | |
| 2997 | copy_to_user(user_buf, buff, size); |
| 2998 | *ppos += size; |
| 2999 | return size; |
| 3000 | } |
| 3001 | |
| 3002 | static ssize_t error_level_write(struct file *file, const char __user *user_buf, |
| 3003 | size_t len, loff_t *ppos) |
| 3004 | { |
| 3005 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 3006 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 3007 | int num = ras_comp_int->num; |
| 3008 | union ibmvnic_crq crq; |
| 3009 | unsigned long val; |
| 3010 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 3011 | |
| 3012 | copy_from_user(buff, user_buf, sizeof(buff)); |
| 3013 | val = kstrtoul(buff, 10, NULL); |
| 3014 | |
| 3015 | if (val > 9) |
| 3016 | val = 9; |
| 3017 | |
| 3018 | memset(&crq, 0, sizeof(crq)); |
| 3019 | crq.control_ras.first = IBMVNIC_CRQ_CMD; |
| 3020 | crq.control_ras.cmd = CONTROL_RAS; |
| 3021 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; |
| 3022 | crq.control_ras.op = IBMVNIC_ERROR_LEVEL; |
| 3023 | crq.control_ras.level = val; |
| 3024 | ibmvnic_send_crq(adapter, &crq); |
| 3025 | |
| 3026 | return len; |
| 3027 | } |
| 3028 | |
| 3029 | static const struct file_operations error_level_ops = { |
| 3030 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 3031 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3032 | .read = error_level_read, |
| 3033 | .write = error_level_write, |
| 3034 | }; |
| 3035 | |
| 3036 | static ssize_t trace_level_read(struct file *file, char __user *user_buf, |
| 3037 | size_t len, loff_t *ppos) |
| 3038 | { |
| 3039 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 3040 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 3041 | int num = ras_comp_int->num; |
| 3042 | char buff[5]; /* decimal max char plus \n and \0 */ |
| 3043 | int size; |
| 3044 | |
| 3045 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level); |
| 3046 | if (*ppos >= size) |
| 3047 | return 0; |
| 3048 | |
| 3049 | copy_to_user(user_buf, buff, size); |
| 3050 | *ppos += size; |
| 3051 | return size; |
| 3052 | } |
| 3053 | |
| 3054 | static ssize_t trace_level_write(struct file *file, const char __user *user_buf, |
| 3055 | size_t len, loff_t *ppos) |
| 3056 | { |
| 3057 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 3058 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 3059 | union ibmvnic_crq crq; |
| 3060 | unsigned long val; |
| 3061 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 3062 | |
| 3063 | copy_from_user(buff, user_buf, sizeof(buff)); |
| 3064 | val = kstrtoul(buff, 10, NULL); |
| 3065 | if (val > 9) |
| 3066 | val = 9; |
| 3067 | |
| 3068 | memset(&crq, 0, sizeof(crq)); |
| 3069 | crq.control_ras.first = IBMVNIC_CRQ_CMD; |
| 3070 | crq.control_ras.cmd = CONTROL_RAS; |
| 3071 | crq.control_ras.correlator = |
| 3072 | adapter->ras_comps[ras_comp_int->num].correlator; |
| 3073 | crq.control_ras.op = IBMVNIC_TRACE_LEVEL; |
| 3074 | crq.control_ras.level = val; |
| 3075 | ibmvnic_send_crq(adapter, &crq); |
| 3076 | |
| 3077 | return len; |
| 3078 | } |
| 3079 | |
| 3080 | static const struct file_operations trace_level_ops = { |
| 3081 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 3082 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3083 | .read = trace_level_read, |
| 3084 | .write = trace_level_write, |
| 3085 | }; |
| 3086 | |
| 3087 | static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf, |
| 3088 | size_t len, loff_t *ppos) |
| 3089 | { |
| 3090 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 3091 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 3092 | int num = ras_comp_int->num; |
| 3093 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 3094 | int size; |
| 3095 | |
| 3096 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size); |
| 3097 | if (*ppos >= size) |
| 3098 | return 0; |
| 3099 | |
| 3100 | copy_to_user(user_buf, buff, size); |
| 3101 | *ppos += size; |
| 3102 | return size; |
| 3103 | } |
| 3104 | |
| 3105 | static ssize_t trace_buff_size_write(struct file *file, |
| 3106 | const char __user *user_buf, size_t len, |
| 3107 | loff_t *ppos) |
| 3108 | { |
| 3109 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; |
| 3110 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; |
| 3111 | union ibmvnic_crq crq; |
| 3112 | unsigned long val; |
| 3113 | char buff[9]; /* decimal max int plus \n and \0 */ |
| 3114 | |
| 3115 | copy_from_user(buff, user_buf, sizeof(buff)); |
| 3116 | val = kstrtoul(buff, 10, NULL); |
| 3117 | |
| 3118 | memset(&crq, 0, sizeof(crq)); |
| 3119 | crq.control_ras.first = IBMVNIC_CRQ_CMD; |
| 3120 | crq.control_ras.cmd = CONTROL_RAS; |
| 3121 | crq.control_ras.correlator = |
| 3122 | adapter->ras_comps[ras_comp_int->num].correlator; |
| 3123 | crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ; |
| 3124 | /* trace_buff_sz is 3 bytes, stuff an int into it */ |
| 3125 | crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5]; |
| 3126 | crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6]; |
| 3127 | crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7]; |
| 3128 | ibmvnic_send_crq(adapter, &crq); |
| 3129 | |
| 3130 | return len; |
| 3131 | } |
| 3132 | |
| 3133 | static const struct file_operations trace_size_ops = { |
| 3134 | .owner = THIS_MODULE, |
Wei Yongjun | 7a95e94 | 2016-08-24 13:50:03 +0000 | [diff] [blame] | 3135 | .open = simple_open, |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3136 | .read = trace_buff_size_read, |
| 3137 | .write = trace_buff_size_write, |
| 3138 | }; |
| 3139 | |
| 3140 | static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq, |
| 3141 | struct ibmvnic_adapter *adapter) |
| 3142 | { |
| 3143 | struct device *dev = &adapter->vdev->dev; |
| 3144 | struct dentry *dir_ent; |
| 3145 | struct dentry *ent; |
| 3146 | int i; |
| 3147 | |
| 3148 | debugfs_remove_recursive(adapter->ras_comps_ent); |
| 3149 | |
| 3150 | adapter->ras_comps_ent = debugfs_create_dir("ras_comps", |
| 3151 | adapter->debugfs_dir); |
| 3152 | if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) { |
| 3153 | dev_info(dev, "debugfs create ras_comps dir failed\n"); |
| 3154 | return; |
| 3155 | } |
| 3156 | |
| 3157 | for (i = 0; i < adapter->ras_comp_num; i++) { |
| 3158 | dir_ent = debugfs_create_dir(adapter->ras_comps[i].name, |
| 3159 | adapter->ras_comps_ent); |
| 3160 | if (!dir_ent || IS_ERR(dir_ent)) { |
| 3161 | dev_info(dev, "debugfs create %s dir failed\n", |
| 3162 | adapter->ras_comps[i].name); |
| 3163 | continue; |
| 3164 | } |
| 3165 | |
| 3166 | adapter->ras_comp_int[i].adapter = adapter; |
| 3167 | adapter->ras_comp_int[i].num = i; |
| 3168 | adapter->ras_comp_int[i].desc_blob.data = |
| 3169 | &adapter->ras_comps[i].description; |
| 3170 | adapter->ras_comp_int[i].desc_blob.size = |
| 3171 | sizeof(adapter->ras_comps[i].description); |
| 3172 | |
| 3173 | /* Don't need to remember the dentry's because the debugfs dir |
| 3174 | * gets removed recursively |
| 3175 | */ |
| 3176 | ent = debugfs_create_blob("description", S_IRUGO, dir_ent, |
| 3177 | &adapter->ras_comp_int[i].desc_blob); |
| 3178 | ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR, |
| 3179 | dir_ent, &adapter->ras_comp_int[i], |
| 3180 | &trace_size_ops); |
| 3181 | ent = debugfs_create_file("trace_level", |
| 3182 | S_IRUGO | |
| 3183 | (adapter->ras_comps[i].trace_level != |
| 3184 | 0xFF ? S_IWUSR : 0), |
| 3185 | dir_ent, &adapter->ras_comp_int[i], |
| 3186 | &trace_level_ops); |
| 3187 | ent = debugfs_create_file("error_level", |
| 3188 | S_IRUGO | |
| 3189 | (adapter-> |
| 3190 | ras_comps[i].error_check_level != |
| 3191 | 0xFF ? S_IWUSR : 0), |
| 3192 | dir_ent, &adapter->ras_comp_int[i], |
| 3193 | &trace_level_ops); |
| 3194 | ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR, |
| 3195 | dir_ent, &adapter->ras_comp_int[i], |
| 3196 | &tracing_ops); |
| 3197 | ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR, |
| 3198 | dir_ent, &adapter->ras_comp_int[i], |
| 3199 | &paused_ops); |
| 3200 | ent = debugfs_create_file("trace", S_IRUGO, dir_ent, |
| 3201 | &adapter->ras_comp_int[i], |
| 3202 | &trace_ops); |
| 3203 | } |
| 3204 | } |
| 3205 | |
| 3206 | static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq, |
| 3207 | struct ibmvnic_adapter *adapter) |
| 3208 | { |
| 3209 | int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component); |
| 3210 | struct device *dev = &adapter->vdev->dev; |
| 3211 | union ibmvnic_crq newcrq; |
| 3212 | |
| 3213 | adapter->ras_comps = dma_alloc_coherent(dev, len, |
| 3214 | &adapter->ras_comps_tok, |
| 3215 | GFP_KERNEL); |
| 3216 | if (!adapter->ras_comps) { |
| 3217 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 3218 | dev_err(dev, "Couldn't alloc fw comps buffer\n"); |
| 3219 | return; |
| 3220 | } |
| 3221 | |
| 3222 | adapter->ras_comp_int = kmalloc(adapter->ras_comp_num * |
| 3223 | sizeof(struct ibmvnic_fw_comp_internal), |
| 3224 | GFP_KERNEL); |
| 3225 | if (!adapter->ras_comp_int) |
| 3226 | dma_free_coherent(dev, len, adapter->ras_comps, |
| 3227 | adapter->ras_comps_tok); |
| 3228 | |
| 3229 | memset(&newcrq, 0, sizeof(newcrq)); |
| 3230 | newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD; |
| 3231 | newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS; |
| 3232 | newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok); |
| 3233 | newcrq.request_ras_comps.len = cpu_to_be32(len); |
| 3234 | ibmvnic_send_crq(adapter, &newcrq); |
| 3235 | } |
| 3236 | |
| 3237 | static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) |
| 3238 | { |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 3239 | struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3240 | struct device *dev = &adapter->vdev->dev; |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 3241 | struct ibmvnic_error_buff *error_buff, *tmp2; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3242 | unsigned long flags; |
| 3243 | unsigned long flags2; |
| 3244 | |
| 3245 | spin_lock_irqsave(&adapter->inflight_lock, flags); |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 3246 | list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3247 | switch (inflight_cmd->crq.generic.cmd) { |
| 3248 | case LOGIN: |
| 3249 | dma_unmap_single(dev, adapter->login_buf_token, |
| 3250 | adapter->login_buf_sz, |
| 3251 | DMA_BIDIRECTIONAL); |
| 3252 | dma_unmap_single(dev, adapter->login_rsp_buf_token, |
| 3253 | adapter->login_rsp_buf_sz, |
| 3254 | DMA_BIDIRECTIONAL); |
| 3255 | kfree(adapter->login_rsp_buf); |
| 3256 | kfree(adapter->login_buf); |
| 3257 | break; |
| 3258 | case REQUEST_DUMP: |
| 3259 | complete(&adapter->fw_done); |
| 3260 | break; |
| 3261 | case REQUEST_ERROR_INFO: |
| 3262 | spin_lock_irqsave(&adapter->error_list_lock, flags2); |
Wei Yongjun | 9618318 | 2016-06-27 20:48:53 +0800 | [diff] [blame] | 3263 | list_for_each_entry_safe(error_buff, tmp2, |
| 3264 | &adapter->errors, list) { |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3265 | dma_unmap_single(dev, error_buff->dma, |
| 3266 | error_buff->len, |
| 3267 | DMA_FROM_DEVICE); |
| 3268 | kfree(error_buff->buff); |
| 3269 | list_del(&error_buff->list); |
| 3270 | kfree(error_buff); |
| 3271 | } |
| 3272 | spin_unlock_irqrestore(&adapter->error_list_lock, |
| 3273 | flags2); |
| 3274 | break; |
| 3275 | } |
| 3276 | list_del(&inflight_cmd->list); |
| 3277 | kfree(inflight_cmd); |
| 3278 | } |
| 3279 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); |
| 3280 | } |
| 3281 | |
Thomas Falcon | 9888d7b | 2016-10-27 12:28:51 -0500 | [diff] [blame] | 3282 | static void ibmvnic_xport_event(struct work_struct *work) |
| 3283 | { |
| 3284 | struct ibmvnic_adapter *adapter = container_of(work, |
| 3285 | struct ibmvnic_adapter, |
| 3286 | ibmvnic_xport); |
| 3287 | struct device *dev = &adapter->vdev->dev; |
| 3288 | long rc; |
| 3289 | |
| 3290 | ibmvnic_free_inflight(adapter); |
| 3291 | release_sub_crqs(adapter); |
| 3292 | if (adapter->migrated) { |
| 3293 | rc = ibmvnic_reenable_crq_queue(adapter); |
| 3294 | if (rc) |
| 3295 | dev_err(dev, "Error after enable rc=%ld\n", rc); |
| 3296 | adapter->migrated = false; |
| 3297 | rc = ibmvnic_send_crq_init(adapter); |
| 3298 | if (rc) |
| 3299 | dev_err(dev, "Error sending init rc=%ld\n", rc); |
| 3300 | } |
| 3301 | } |
| 3302 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3303 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
| 3304 | struct ibmvnic_adapter *adapter) |
| 3305 | { |
| 3306 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; |
| 3307 | struct net_device *netdev = adapter->netdev; |
| 3308 | struct device *dev = &adapter->vdev->dev; |
| 3309 | long rc; |
| 3310 | |
| 3311 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", |
| 3312 | ((unsigned long int *)crq)[0], |
| 3313 | ((unsigned long int *)crq)[1]); |
| 3314 | switch (gen_crq->first) { |
| 3315 | case IBMVNIC_CRQ_INIT_RSP: |
| 3316 | switch (gen_crq->cmd) { |
| 3317 | case IBMVNIC_CRQ_INIT: |
| 3318 | dev_info(dev, "Partner initialized\n"); |
| 3319 | /* Send back a response */ |
| 3320 | rc = ibmvnic_send_crq_init_complete(adapter); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3321 | if (!rc) |
| 3322 | schedule_work(&adapter->vnic_crq_init); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3323 | else |
| 3324 | dev_err(dev, "Can't send initrsp rc=%ld\n", rc); |
| 3325 | break; |
| 3326 | case IBMVNIC_CRQ_INIT_COMPLETE: |
| 3327 | dev_info(dev, "Partner initialization complete\n"); |
| 3328 | send_version_xchg(adapter); |
| 3329 | break; |
| 3330 | default: |
| 3331 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); |
| 3332 | } |
| 3333 | return; |
| 3334 | case IBMVNIC_CRQ_XPORT_EVENT: |
| 3335 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { |
| 3336 | dev_info(dev, "Re-enabling adapter\n"); |
| 3337 | adapter->migrated = true; |
Thomas Falcon | 9888d7b | 2016-10-27 12:28:51 -0500 | [diff] [blame] | 3338 | schedule_work(&adapter->ibmvnic_xport); |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3339 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
| 3340 | dev_info(dev, "Backing device failover detected\n"); |
| 3341 | netif_carrier_off(netdev); |
| 3342 | adapter->failover = true; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3343 | } else { |
| 3344 | /* The adapter lost the connection */ |
| 3345 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", |
| 3346 | gen_crq->cmd); |
Thomas Falcon | 9888d7b | 2016-10-27 12:28:51 -0500 | [diff] [blame] | 3347 | schedule_work(&adapter->ibmvnic_xport); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3348 | } |
| 3349 | return; |
| 3350 | case IBMVNIC_CRQ_CMD_RSP: |
| 3351 | break; |
| 3352 | default: |
| 3353 | dev_err(dev, "Got an invalid msg type 0x%02x\n", |
| 3354 | gen_crq->first); |
| 3355 | return; |
| 3356 | } |
| 3357 | |
| 3358 | switch (gen_crq->cmd) { |
| 3359 | case VERSION_EXCHANGE_RSP: |
| 3360 | rc = crq->version_exchange_rsp.rc.code; |
| 3361 | if (rc) { |
| 3362 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); |
| 3363 | break; |
| 3364 | } |
| 3365 | dev_info(dev, "Partner protocol version is %d\n", |
| 3366 | crq->version_exchange_rsp.version); |
| 3367 | if (be16_to_cpu(crq->version_exchange_rsp.version) < |
| 3368 | ibmvnic_version) |
| 3369 | ibmvnic_version = |
| 3370 | be16_to_cpu(crq->version_exchange_rsp.version); |
| 3371 | send_cap_queries(adapter); |
| 3372 | break; |
| 3373 | case QUERY_CAPABILITY_RSP: |
| 3374 | handle_query_cap_rsp(crq, adapter); |
| 3375 | break; |
| 3376 | case QUERY_MAP_RSP: |
| 3377 | handle_query_map_rsp(crq, adapter); |
| 3378 | break; |
| 3379 | case REQUEST_MAP_RSP: |
| 3380 | handle_request_map_rsp(crq, adapter); |
| 3381 | break; |
| 3382 | case REQUEST_UNMAP_RSP: |
| 3383 | handle_request_unmap_rsp(crq, adapter); |
| 3384 | break; |
| 3385 | case REQUEST_CAPABILITY_RSP: |
| 3386 | handle_request_cap_rsp(crq, adapter); |
| 3387 | break; |
| 3388 | case LOGIN_RSP: |
| 3389 | netdev_dbg(netdev, "Got Login Response\n"); |
| 3390 | handle_login_rsp(crq, adapter); |
| 3391 | break; |
| 3392 | case LOGICAL_LINK_STATE_RSP: |
| 3393 | netdev_dbg(netdev, "Got Logical Link State Response\n"); |
| 3394 | adapter->logical_link_state = |
| 3395 | crq->logical_link_state_rsp.link_state; |
| 3396 | break; |
| 3397 | case LINK_STATE_INDICATION: |
| 3398 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); |
| 3399 | adapter->phys_link_state = |
| 3400 | crq->link_state_indication.phys_link_state; |
| 3401 | adapter->logical_link_state = |
| 3402 | crq->link_state_indication.logical_link_state; |
| 3403 | break; |
| 3404 | case CHANGE_MAC_ADDR_RSP: |
| 3405 | netdev_dbg(netdev, "Got MAC address change Response\n"); |
| 3406 | handle_change_mac_rsp(crq, adapter); |
| 3407 | break; |
| 3408 | case ERROR_INDICATION: |
| 3409 | netdev_dbg(netdev, "Got Error Indication\n"); |
| 3410 | handle_error_indication(crq, adapter); |
| 3411 | break; |
| 3412 | case REQUEST_ERROR_RSP: |
| 3413 | netdev_dbg(netdev, "Got Error Detail Response\n"); |
| 3414 | handle_error_info_rsp(crq, adapter); |
| 3415 | break; |
| 3416 | case REQUEST_STATISTICS_RSP: |
| 3417 | netdev_dbg(netdev, "Got Statistics Response\n"); |
| 3418 | complete(&adapter->stats_done); |
| 3419 | break; |
| 3420 | case REQUEST_DUMP_SIZE_RSP: |
| 3421 | netdev_dbg(netdev, "Got Request Dump Size Response\n"); |
| 3422 | handle_dump_size_rsp(crq, adapter); |
| 3423 | break; |
| 3424 | case REQUEST_DUMP_RSP: |
| 3425 | netdev_dbg(netdev, "Got Request Dump Response\n"); |
| 3426 | complete(&adapter->fw_done); |
| 3427 | break; |
| 3428 | case QUERY_IP_OFFLOAD_RSP: |
| 3429 | netdev_dbg(netdev, "Got Query IP offload Response\n"); |
| 3430 | handle_query_ip_offload_rsp(adapter); |
| 3431 | break; |
| 3432 | case MULTICAST_CTRL_RSP: |
| 3433 | netdev_dbg(netdev, "Got multicast control Response\n"); |
| 3434 | break; |
| 3435 | case CONTROL_IP_OFFLOAD_RSP: |
| 3436 | netdev_dbg(netdev, "Got Control IP offload Response\n"); |
| 3437 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, |
| 3438 | sizeof(adapter->ip_offload_ctrl), |
| 3439 | DMA_TO_DEVICE); |
| 3440 | /* We're done with the queries, perform the login */ |
| 3441 | send_login(adapter); |
| 3442 | break; |
| 3443 | case REQUEST_RAS_COMP_NUM_RSP: |
| 3444 | netdev_dbg(netdev, "Got Request RAS Comp Num Response\n"); |
| 3445 | if (crq->request_ras_comp_num_rsp.rc.code == 10) { |
| 3446 | netdev_dbg(netdev, "Request RAS Comp Num not supported\n"); |
| 3447 | break; |
| 3448 | } |
| 3449 | adapter->ras_comp_num = |
| 3450 | be32_to_cpu(crq->request_ras_comp_num_rsp.num_components); |
| 3451 | handle_request_ras_comp_num_rsp(crq, adapter); |
| 3452 | break; |
| 3453 | case REQUEST_RAS_COMPS_RSP: |
| 3454 | netdev_dbg(netdev, "Got Request RAS Comps Response\n"); |
| 3455 | handle_request_ras_comps_rsp(crq, adapter); |
| 3456 | break; |
| 3457 | case CONTROL_RAS_RSP: |
| 3458 | netdev_dbg(netdev, "Got Control RAS Response\n"); |
| 3459 | handle_control_ras_rsp(crq, adapter); |
| 3460 | break; |
| 3461 | case COLLECT_FW_TRACE_RSP: |
| 3462 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); |
| 3463 | complete(&adapter->fw_done); |
| 3464 | break; |
| 3465 | default: |
| 3466 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", |
| 3467 | gen_crq->cmd); |
| 3468 | } |
| 3469 | } |
| 3470 | |
| 3471 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) |
| 3472 | { |
| 3473 | struct ibmvnic_adapter *adapter = instance; |
| 3474 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
| 3475 | struct vio_dev *vdev = adapter->vdev; |
| 3476 | union ibmvnic_crq *crq; |
| 3477 | unsigned long flags; |
| 3478 | bool done = false; |
| 3479 | |
| 3480 | spin_lock_irqsave(&queue->lock, flags); |
| 3481 | vio_disable_interrupts(vdev); |
| 3482 | while (!done) { |
| 3483 | /* Pull all the valid messages off the CRQ */ |
| 3484 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { |
| 3485 | ibmvnic_handle_crq(crq, adapter); |
| 3486 | crq->generic.first = 0; |
| 3487 | } |
| 3488 | vio_enable_interrupts(vdev); |
| 3489 | crq = ibmvnic_next_crq(adapter); |
| 3490 | if (crq) { |
| 3491 | vio_disable_interrupts(vdev); |
| 3492 | ibmvnic_handle_crq(crq, adapter); |
| 3493 | crq->generic.first = 0; |
| 3494 | } else { |
| 3495 | done = true; |
| 3496 | } |
| 3497 | } |
| 3498 | spin_unlock_irqrestore(&queue->lock, flags); |
| 3499 | return IRQ_HANDLED; |
| 3500 | } |
| 3501 | |
| 3502 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) |
| 3503 | { |
| 3504 | struct vio_dev *vdev = adapter->vdev; |
| 3505 | int rc; |
| 3506 | |
| 3507 | do { |
| 3508 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); |
| 3509 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); |
| 3510 | |
| 3511 | if (rc) |
| 3512 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); |
| 3513 | |
| 3514 | return rc; |
| 3515 | } |
| 3516 | |
| 3517 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) |
| 3518 | { |
| 3519 | struct ibmvnic_crq_queue *crq = &adapter->crq; |
| 3520 | struct device *dev = &adapter->vdev->dev; |
| 3521 | struct vio_dev *vdev = adapter->vdev; |
| 3522 | int rc; |
| 3523 | |
| 3524 | /* Close the CRQ */ |
| 3525 | do { |
| 3526 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); |
| 3527 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); |
| 3528 | |
| 3529 | /* Clean out the queue */ |
| 3530 | memset(crq->msgs, 0, PAGE_SIZE); |
| 3531 | crq->cur = 0; |
| 3532 | |
| 3533 | /* And re-open it again */ |
| 3534 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, |
| 3535 | crq->msg_token, PAGE_SIZE); |
| 3536 | |
| 3537 | if (rc == H_CLOSED) |
| 3538 | /* Adapter is good, but other end is not ready */ |
| 3539 | dev_warn(dev, "Partner adapter not ready\n"); |
| 3540 | else if (rc != 0) |
| 3541 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); |
| 3542 | |
| 3543 | return rc; |
| 3544 | } |
| 3545 | |
| 3546 | static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter) |
| 3547 | { |
| 3548 | struct ibmvnic_crq_queue *crq = &adapter->crq; |
| 3549 | struct vio_dev *vdev = adapter->vdev; |
| 3550 | long rc; |
| 3551 | |
| 3552 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
| 3553 | free_irq(vdev->irq, adapter); |
| 3554 | do { |
| 3555 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); |
| 3556 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); |
| 3557 | |
| 3558 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, |
| 3559 | DMA_BIDIRECTIONAL); |
| 3560 | free_page((unsigned long)crq->msgs); |
| 3561 | } |
| 3562 | |
| 3563 | static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter) |
| 3564 | { |
| 3565 | struct ibmvnic_crq_queue *crq = &adapter->crq; |
| 3566 | struct device *dev = &adapter->vdev->dev; |
| 3567 | struct vio_dev *vdev = adapter->vdev; |
| 3568 | int rc, retrc = -ENOMEM; |
| 3569 | |
| 3570 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
| 3571 | /* Should we allocate more than one page? */ |
| 3572 | |
| 3573 | if (!crq->msgs) |
| 3574 | return -ENOMEM; |
| 3575 | |
| 3576 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); |
| 3577 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, |
| 3578 | DMA_BIDIRECTIONAL); |
| 3579 | if (dma_mapping_error(dev, crq->msg_token)) |
| 3580 | goto map_failed; |
| 3581 | |
| 3582 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, |
| 3583 | crq->msg_token, PAGE_SIZE); |
| 3584 | |
| 3585 | if (rc == H_RESOURCE) |
| 3586 | /* maybe kexecing and resource is busy. try a reset */ |
| 3587 | rc = ibmvnic_reset_crq(adapter); |
| 3588 | retrc = rc; |
| 3589 | |
| 3590 | if (rc == H_CLOSED) { |
| 3591 | dev_warn(dev, "Partner adapter not ready\n"); |
| 3592 | } else if (rc) { |
| 3593 | dev_warn(dev, "Error %d opening adapter\n", rc); |
| 3594 | goto reg_crq_failed; |
| 3595 | } |
| 3596 | |
| 3597 | retrc = 0; |
| 3598 | |
| 3599 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
| 3600 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, |
| 3601 | adapter); |
| 3602 | if (rc) { |
| 3603 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", |
| 3604 | vdev->irq, rc); |
| 3605 | goto req_irq_failed; |
| 3606 | } |
| 3607 | |
| 3608 | rc = vio_enable_interrupts(vdev); |
| 3609 | if (rc) { |
| 3610 | dev_err(dev, "Error %d enabling interrupts\n", rc); |
| 3611 | goto req_irq_failed; |
| 3612 | } |
| 3613 | |
| 3614 | crq->cur = 0; |
| 3615 | spin_lock_init(&crq->lock); |
| 3616 | |
| 3617 | return retrc; |
| 3618 | |
| 3619 | req_irq_failed: |
| 3620 | do { |
| 3621 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); |
| 3622 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); |
| 3623 | reg_crq_failed: |
| 3624 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); |
| 3625 | map_failed: |
| 3626 | free_page((unsigned long)crq->msgs); |
| 3627 | return retrc; |
| 3628 | } |
| 3629 | |
| 3630 | /* debugfs for dump */ |
| 3631 | static int ibmvnic_dump_show(struct seq_file *seq, void *v) |
| 3632 | { |
| 3633 | struct net_device *netdev = seq->private; |
| 3634 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 3635 | struct device *dev = &adapter->vdev->dev; |
| 3636 | union ibmvnic_crq crq; |
| 3637 | |
| 3638 | memset(&crq, 0, sizeof(crq)); |
| 3639 | crq.request_dump_size.first = IBMVNIC_CRQ_CMD; |
| 3640 | crq.request_dump_size.cmd = REQUEST_DUMP_SIZE; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3641 | |
| 3642 | init_completion(&adapter->fw_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 3643 | ibmvnic_send_crq(adapter, &crq); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3644 | wait_for_completion(&adapter->fw_done); |
| 3645 | |
| 3646 | seq_write(seq, adapter->dump_data, adapter->dump_data_size); |
| 3647 | |
| 3648 | dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size, |
| 3649 | DMA_BIDIRECTIONAL); |
| 3650 | |
| 3651 | kfree(adapter->dump_data); |
| 3652 | |
| 3653 | return 0; |
| 3654 | } |
| 3655 | |
| 3656 | static int ibmvnic_dump_open(struct inode *inode, struct file *file) |
| 3657 | { |
| 3658 | return single_open(file, ibmvnic_dump_show, inode->i_private); |
| 3659 | } |
| 3660 | |
| 3661 | static const struct file_operations ibmvnic_dump_ops = { |
| 3662 | .owner = THIS_MODULE, |
| 3663 | .open = ibmvnic_dump_open, |
| 3664 | .read = seq_read, |
| 3665 | .llseek = seq_lseek, |
| 3666 | .release = single_release, |
| 3667 | }; |
| 3668 | |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3669 | static void handle_crq_init_rsp(struct work_struct *work) |
| 3670 | { |
| 3671 | struct ibmvnic_adapter *adapter = container_of(work, |
| 3672 | struct ibmvnic_adapter, |
| 3673 | vnic_crq_init); |
| 3674 | struct device *dev = &adapter->vdev->dev; |
| 3675 | struct net_device *netdev = adapter->netdev; |
| 3676 | unsigned long timeout = msecs_to_jiffies(30000); |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3677 | bool restart = false; |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3678 | int rc; |
| 3679 | |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3680 | if (adapter->failover) { |
| 3681 | release_sub_crqs(adapter); |
| 3682 | if (netif_running(netdev)) { |
| 3683 | netif_tx_disable(netdev); |
| 3684 | ibmvnic_close(netdev); |
| 3685 | restart = true; |
| 3686 | } |
| 3687 | } |
| 3688 | |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3689 | reinit_completion(&adapter->init_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 3690 | send_version_xchg(adapter); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3691 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { |
| 3692 | dev_err(dev, "Passive init timeout\n"); |
| 3693 | goto task_failed; |
| 3694 | } |
| 3695 | |
| 3696 | do { |
| 3697 | if (adapter->renegotiate) { |
| 3698 | adapter->renegotiate = false; |
| 3699 | release_sub_crqs_no_irqs(adapter); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3700 | |
| 3701 | reinit_completion(&adapter->init_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 3702 | send_cap_queries(adapter); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3703 | if (!wait_for_completion_timeout(&adapter->init_done, |
| 3704 | timeout)) { |
| 3705 | dev_err(dev, "Passive init timeout\n"); |
| 3706 | goto task_failed; |
| 3707 | } |
| 3708 | } |
| 3709 | } while (adapter->renegotiate); |
| 3710 | rc = init_sub_crq_irqs(adapter); |
| 3711 | |
| 3712 | if (rc) |
| 3713 | goto task_failed; |
| 3714 | |
| 3715 | netdev->real_num_tx_queues = adapter->req_tx_queues; |
Thomas Falcon | 87737f8 | 2016-10-17 15:28:10 -0500 | [diff] [blame] | 3716 | netdev->mtu = adapter->req_mtu; |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3717 | |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3718 | if (adapter->failover) { |
| 3719 | adapter->failover = false; |
| 3720 | if (restart) { |
| 3721 | rc = ibmvnic_open(netdev); |
| 3722 | if (rc) |
| 3723 | goto restart_failed; |
| 3724 | } |
| 3725 | netif_carrier_on(netdev); |
| 3726 | return; |
| 3727 | } |
| 3728 | |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3729 | rc = register_netdev(netdev); |
| 3730 | if (rc) { |
| 3731 | dev_err(dev, |
| 3732 | "failed to register netdev rc=%d\n", rc); |
| 3733 | goto register_failed; |
| 3734 | } |
| 3735 | dev_info(dev, "ibmvnic registered\n"); |
| 3736 | |
| 3737 | return; |
| 3738 | |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3739 | restart_failed: |
| 3740 | dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3741 | register_failed: |
| 3742 | release_sub_crqs(adapter); |
| 3743 | task_failed: |
| 3744 | dev_err(dev, "Passive initialization was not successful\n"); |
| 3745 | } |
| 3746 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3747 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) |
| 3748 | { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3749 | unsigned long timeout = msecs_to_jiffies(30000); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3750 | struct ibmvnic_adapter *adapter; |
| 3751 | struct net_device *netdev; |
| 3752 | unsigned char *mac_addr_p; |
| 3753 | struct dentry *ent; |
Thomas Falcon | e1fac0a | 2016-11-11 11:00:46 -0600 | [diff] [blame] | 3754 | char buf[17]; /* debugfs name buf */ |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3755 | int rc; |
| 3756 | |
| 3757 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", |
| 3758 | dev->unit_address); |
| 3759 | |
| 3760 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, |
| 3761 | VETH_MAC_ADDR, NULL); |
| 3762 | if (!mac_addr_p) { |
| 3763 | dev_err(&dev->dev, |
| 3764 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", |
| 3765 | __FILE__, __LINE__); |
| 3766 | return 0; |
| 3767 | } |
| 3768 | |
| 3769 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), |
| 3770 | IBMVNIC_MAX_TX_QUEUES); |
| 3771 | if (!netdev) |
| 3772 | return -ENOMEM; |
| 3773 | |
| 3774 | adapter = netdev_priv(netdev); |
| 3775 | dev_set_drvdata(&dev->dev, netdev); |
| 3776 | adapter->vdev = dev; |
| 3777 | adapter->netdev = netdev; |
Thomas Falcon | dfad09a | 2016-08-18 11:37:51 -0500 | [diff] [blame] | 3778 | adapter->failover = false; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3779 | |
| 3780 | ether_addr_copy(adapter->mac_addr, mac_addr_p); |
| 3781 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); |
| 3782 | netdev->irq = dev->irq; |
| 3783 | netdev->netdev_ops = &ibmvnic_netdev_ops; |
| 3784 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; |
| 3785 | SET_NETDEV_DEV(netdev, &dev->dev); |
| 3786 | |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3787 | INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp); |
Thomas Falcon | 9888d7b | 2016-10-27 12:28:51 -0500 | [diff] [blame] | 3788 | INIT_WORK(&adapter->ibmvnic_xport, ibmvnic_xport_event); |
Thomas Falcon | 65dc689 | 2016-07-06 15:35:18 -0500 | [diff] [blame] | 3789 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3790 | spin_lock_init(&adapter->stats_lock); |
| 3791 | |
| 3792 | rc = ibmvnic_init_crq_queue(adapter); |
| 3793 | if (rc) { |
| 3794 | dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc); |
| 3795 | goto free_netdev; |
| 3796 | } |
| 3797 | |
| 3798 | INIT_LIST_HEAD(&adapter->errors); |
| 3799 | INIT_LIST_HEAD(&adapter->inflight); |
| 3800 | spin_lock_init(&adapter->error_list_lock); |
| 3801 | spin_lock_init(&adapter->inflight_lock); |
| 3802 | |
| 3803 | adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats, |
| 3804 | sizeof(struct ibmvnic_statistics), |
| 3805 | DMA_FROM_DEVICE); |
| 3806 | if (dma_mapping_error(&dev->dev, adapter->stats_token)) { |
| 3807 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 3808 | dev_err(&dev->dev, "Couldn't map stats buffer\n"); |
Wei Yongjun | 0e87203 | 2016-08-24 13:47:58 +0000 | [diff] [blame] | 3809 | rc = -ENOMEM; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3810 | goto free_crq; |
| 3811 | } |
| 3812 | |
| 3813 | snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address); |
| 3814 | ent = debugfs_create_dir(buf, NULL); |
| 3815 | if (!ent || IS_ERR(ent)) { |
| 3816 | dev_info(&dev->dev, "debugfs create directory failed\n"); |
| 3817 | adapter->debugfs_dir = NULL; |
| 3818 | } else { |
| 3819 | adapter->debugfs_dir = ent; |
| 3820 | ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir, |
| 3821 | netdev, &ibmvnic_dump_ops); |
| 3822 | if (!ent || IS_ERR(ent)) { |
| 3823 | dev_info(&dev->dev, |
| 3824 | "debugfs create dump file failed\n"); |
| 3825 | adapter->debugfs_dump = NULL; |
| 3826 | } else { |
| 3827 | adapter->debugfs_dump = ent; |
| 3828 | } |
| 3829 | } |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3830 | |
| 3831 | init_completion(&adapter->init_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 3832 | ibmvnic_send_crq_init(adapter); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3833 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) |
| 3834 | return 0; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3835 | |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 3836 | do { |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 3837 | if (adapter->renegotiate) { |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3838 | adapter->renegotiate = false; |
| 3839 | release_sub_crqs_no_irqs(adapter); |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 3840 | |
| 3841 | reinit_completion(&adapter->init_done); |
Nathan Fontenot | ae0b63e | 2017-05-23 21:53:39 -0400 | [diff] [blame] | 3842 | send_cap_queries(adapter); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3843 | if (!wait_for_completion_timeout(&adapter->init_done, |
| 3844 | timeout)) |
| 3845 | return 0; |
John Allen | 498cd8e | 2016-04-06 11:49:55 -0500 | [diff] [blame] | 3846 | } |
| 3847 | } while (adapter->renegotiate); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3848 | |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3849 | rc = init_sub_crq_irqs(adapter); |
| 3850 | if (rc) { |
| 3851 | dev_err(&dev->dev, "failed to initialize sub crq irqs\n"); |
| 3852 | goto free_debugfs; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3853 | } |
| 3854 | |
| 3855 | netdev->real_num_tx_queues = adapter->req_tx_queues; |
Thomas Falcon | 87737f8 | 2016-10-17 15:28:10 -0500 | [diff] [blame] | 3856 | netdev->mtu = adapter->req_mtu; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3857 | |
| 3858 | rc = register_netdev(netdev); |
| 3859 | if (rc) { |
| 3860 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3861 | goto free_sub_crqs; |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3862 | } |
| 3863 | dev_info(&dev->dev, "ibmvnic registered\n"); |
| 3864 | |
| 3865 | return 0; |
| 3866 | |
Thomas Falcon | ea22d51 | 2016-07-06 15:35:17 -0500 | [diff] [blame] | 3867 | free_sub_crqs: |
| 3868 | release_sub_crqs(adapter); |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3869 | free_debugfs: |
| 3870 | if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) |
| 3871 | debugfs_remove_recursive(adapter->debugfs_dir); |
| 3872 | free_crq: |
| 3873 | ibmvnic_release_crq_queue(adapter); |
| 3874 | free_netdev: |
| 3875 | free_netdev(netdev); |
| 3876 | return rc; |
| 3877 | } |
| 3878 | |
| 3879 | static int ibmvnic_remove(struct vio_dev *dev) |
| 3880 | { |
| 3881 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
| 3882 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 3883 | |
| 3884 | unregister_netdev(netdev); |
| 3885 | |
| 3886 | release_sub_crqs(adapter); |
| 3887 | |
| 3888 | ibmvnic_release_crq_queue(adapter); |
| 3889 | |
| 3890 | if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) |
| 3891 | debugfs_remove_recursive(adapter->debugfs_dir); |
| 3892 | |
Thomas Falcon | b7f193d | 2016-11-11 11:00:45 -0600 | [diff] [blame] | 3893 | dma_unmap_single(&dev->dev, adapter->stats_token, |
| 3894 | sizeof(struct ibmvnic_statistics), DMA_FROM_DEVICE); |
| 3895 | |
Thomas Falcon | 032c5e8 | 2015-12-21 11:26:06 -0600 | [diff] [blame] | 3896 | if (adapter->ras_comps) |
| 3897 | dma_free_coherent(&dev->dev, |
| 3898 | adapter->ras_comp_num * |
| 3899 | sizeof(struct ibmvnic_fw_component), |
| 3900 | adapter->ras_comps, adapter->ras_comps_tok); |
| 3901 | |
| 3902 | kfree(adapter->ras_comp_int); |
| 3903 | |
| 3904 | free_netdev(netdev); |
| 3905 | dev_set_drvdata(&dev->dev, NULL); |
| 3906 | |
| 3907 | return 0; |
| 3908 | } |
| 3909 | |
| 3910 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) |
| 3911 | { |
| 3912 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); |
| 3913 | struct ibmvnic_adapter *adapter; |
| 3914 | struct iommu_table *tbl; |
| 3915 | unsigned long ret = 0; |
| 3916 | int i; |
| 3917 | |
| 3918 | tbl = get_iommu_table_base(&vdev->dev); |
| 3919 | |
| 3920 | /* netdev inits at probe time along with the structures we need below*/ |
| 3921 | if (!netdev) |
| 3922 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); |
| 3923 | |
| 3924 | adapter = netdev_priv(netdev); |
| 3925 | |
| 3926 | ret += PAGE_SIZE; /* the crq message queue */ |
| 3927 | ret += adapter->bounce_buffer_size; |
| 3928 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); |
| 3929 | |
| 3930 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) |
| 3931 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ |
| 3932 | |
| 3933 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
| 3934 | i++) |
| 3935 | ret += adapter->rx_pool[i].size * |
| 3936 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); |
| 3937 | |
| 3938 | return ret; |
| 3939 | } |
| 3940 | |
| 3941 | static int ibmvnic_resume(struct device *dev) |
| 3942 | { |
| 3943 | struct net_device *netdev = dev_get_drvdata(dev); |
| 3944 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
| 3945 | int i; |
| 3946 | |
| 3947 | /* kick the interrupt handlers just in case we lost an interrupt */ |
| 3948 | for (i = 0; i < adapter->req_rx_queues; i++) |
| 3949 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, |
| 3950 | adapter->rx_scrq[i]); |
| 3951 | |
| 3952 | return 0; |
| 3953 | } |
| 3954 | |
| 3955 | static struct vio_device_id ibmvnic_device_table[] = { |
| 3956 | {"network", "IBM,vnic"}, |
| 3957 | {"", "" } |
| 3958 | }; |
| 3959 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); |
| 3960 | |
| 3961 | static const struct dev_pm_ops ibmvnic_pm_ops = { |
| 3962 | .resume = ibmvnic_resume |
| 3963 | }; |
| 3964 | |
| 3965 | static struct vio_driver ibmvnic_driver = { |
| 3966 | .id_table = ibmvnic_device_table, |
| 3967 | .probe = ibmvnic_probe, |
| 3968 | .remove = ibmvnic_remove, |
| 3969 | .get_desired_dma = ibmvnic_get_desired_dma, |
| 3970 | .name = ibmvnic_driver_name, |
| 3971 | .pm = &ibmvnic_pm_ops, |
| 3972 | }; |
| 3973 | |
| 3974 | /* module functions */ |
| 3975 | static int __init ibmvnic_module_init(void) |
| 3976 | { |
| 3977 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, |
| 3978 | IBMVNIC_DRIVER_VERSION); |
| 3979 | |
| 3980 | return vio_register_driver(&ibmvnic_driver); |
| 3981 | } |
| 3982 | |
| 3983 | static void __exit ibmvnic_module_exit(void) |
| 3984 | { |
| 3985 | vio_unregister_driver(&ibmvnic_driver); |
| 3986 | } |
| 3987 | |
| 3988 | module_init(ibmvnic_module_init); |
| 3989 | module_exit(ibmvnic_module_exit); |