Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1 | /* |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 2 | * IBM Power Virtual Ethernet Device Driver |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 3 | * |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 8 | * |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 13 | * |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 17 | * |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 18 | * Copyright (C) IBM Corporation, 2003, 2010 |
| 19 | * |
| 20 | * Authors: Dave Larson <larson1@us.ibm.com> |
| 21 | * Santiago Leon <santil@linux.vnet.ibm.com> |
| 22 | * Brian King <brking@linux.vnet.ibm.com> |
| 23 | * Robert Jennings <rcj@linux.vnet.ibm.com> |
| 24 | * Anton Blanchard <anton@au.ibm.com> |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 25 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 28 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/types.h> |
| 30 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/dma-mapping.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/netdevice.h> |
| 34 | #include <linux/etherdevice.h> |
| 35 | #include <linux/skbuff.h> |
| 36 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 37 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/mm.h> |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 39 | #include <linux/pm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/ethtool.h> |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 41 | #include <linux/in.h> |
| 42 | #include <linux/ip.h> |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 43 | #include <linux/ipv6.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 44 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/hvcall.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame^] | 46 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <asm/vio.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 48 | #include <asm/iommu.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 49 | #include <asm/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #include "ibmveth.h" |
| 52 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 53 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 54 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 55 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev); |
Santiago Leon | e295fe8 | 2010-09-03 18:29:08 +0000 | [diff] [blame] | 56 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 57 | static struct kobj_type ktype_veth_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | static const char ibmveth_driver_name[] = "ibmveth"; |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 61 | static const char ibmveth_driver_string[] = "IBM Power Virtual Ethernet Driver"; |
| 62 | #define ibmveth_driver_version "1.04" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 64 | MODULE_AUTHOR("Santiago Leon <santil@linux.vnet.ibm.com>"); |
| 65 | MODULE_DESCRIPTION("IBM Power Virtual Ethernet Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | MODULE_LICENSE("GPL"); |
| 67 | MODULE_VERSION(ibmveth_driver_version); |
| 68 | |
Santiago Leon | c08cc3c | 2010-09-03 18:28:20 +0000 | [diff] [blame] | 69 | static unsigned int tx_copybreak __read_mostly = 128; |
| 70 | module_param(tx_copybreak, uint, 0644); |
| 71 | MODULE_PARM_DESC(tx_copybreak, |
| 72 | "Maximum size of packet that is copied to a new buffer on transmit"); |
| 73 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 74 | static unsigned int rx_copybreak __read_mostly = 128; |
| 75 | module_param(rx_copybreak, uint, 0644); |
| 76 | MODULE_PARM_DESC(rx_copybreak, |
| 77 | "Maximum size of packet that is copied to a new buffer on receive"); |
| 78 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 79 | static unsigned int rx_flush __read_mostly = 0; |
| 80 | module_param(rx_flush, uint, 0644); |
| 81 | MODULE_PARM_DESC(rx_flush, "Flush receive buffers before use"); |
| 82 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 83 | struct ibmveth_stat { |
| 84 | char name[ETH_GSTRING_LEN]; |
| 85 | int offset; |
| 86 | }; |
| 87 | |
| 88 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) |
| 89 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) |
| 90 | |
| 91 | struct ibmveth_stat ibmveth_stats[] = { |
| 92 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, |
| 93 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 94 | { "replenish_add_buff_failure", |
| 95 | IBMVETH_STAT_OFF(replenish_add_buff_failure) }, |
| 96 | { "replenish_add_buff_success", |
| 97 | IBMVETH_STAT_OFF(replenish_add_buff_success) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 98 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, |
| 99 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 100 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
| 101 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 102 | { "fw_enabled_ipv4_csum", IBMVETH_STAT_OFF(fw_ipv4_csum_support) }, |
| 103 | { "fw_enabled_ipv6_csum", IBMVETH_STAT_OFF(fw_ipv6_csum_support) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 104 | }; |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | /* simple methods of getting data from the current rxq entry */ |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 107 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
| 108 | { |
| 109 | return adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off; |
| 110 | } |
| 111 | |
| 112 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) |
| 113 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 114 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> |
| 115 | IBMVETH_RXQ_TOGGLE_SHIFT; |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 116 | } |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
| 119 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 120 | return ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) |
| 124 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 125 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) |
| 129 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 130 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) |
| 134 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 135 | return adapter->rx_queue.queue_addr[adapter->rx_queue.index].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 138 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
| 139 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 140 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 141 | } |
| 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | /* setup the initial settings for a buffer pool */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 144 | static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, |
| 145 | u32 pool_index, u32 pool_size, |
| 146 | u32 buff_size, u32 pool_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | { |
| 148 | pool->size = pool_size; |
| 149 | pool->index = pool_index; |
| 150 | pool->buff_size = buff_size; |
Santiago Leon | c033a6d | 2010-09-03 18:28:09 +0000 | [diff] [blame] | 151 | pool->threshold = pool_size * 7 / 8; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 152 | pool->active = pool_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | /* allocate and setup an buffer pool - called during open */ |
| 156 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) |
| 157 | { |
| 158 | int i; |
| 159 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 160 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 162 | if (!pool->free_map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 165 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 166 | if (!pool->dma_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | kfree(pool->free_map); |
| 168 | pool->free_map = NULL; |
| 169 | return -1; |
| 170 | } |
| 171 | |
Julia Lawall | a05abcb | 2010-05-13 10:06:01 +0000 | [diff] [blame] | 172 | pool->skbuff = kcalloc(pool->size, sizeof(void *), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 174 | if (!pool->skbuff) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | kfree(pool->dma_addr); |
| 176 | pool->dma_addr = NULL; |
| 177 | |
| 178 | kfree(pool->free_map); |
| 179 | pool->free_map = NULL; |
| 180 | return -1; |
| 181 | } |
| 182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); |
| 184 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 185 | for (i = 0; i < pool->size; ++i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | pool->free_map[i] = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
| 188 | atomic_set(&pool->available, 0); |
| 189 | pool->producer_index = 0; |
| 190 | pool->consumer_index = 0; |
| 191 | |
| 192 | return 0; |
| 193 | } |
| 194 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 195 | static inline void ibmveth_flush_buffer(void *addr, unsigned long length) |
| 196 | { |
| 197 | unsigned long offset; |
| 198 | |
| 199 | for (offset = 0; offset < length; offset += SMP_CACHE_BYTES) |
| 200 | asm("dcbfl %0,%1" :: "b" (addr), "r" (offset)); |
| 201 | } |
| 202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | /* replenish the buffers for a pool. note that we don't need to |
| 204 | * skb_reserve these since they are used for incoming... |
| 205 | */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 206 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, |
| 207 | struct ibmveth_buff_pool *pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
| 209 | u32 i; |
| 210 | u32 count = pool->size - atomic_read(&pool->available); |
| 211 | u32 buffers_added = 0; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 212 | struct sk_buff *skb; |
| 213 | unsigned int free_index, index; |
| 214 | u64 correlator; |
| 215 | unsigned long lpar_rc; |
| 216 | dma_addr_t dma_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
| 218 | mb(); |
| 219 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 220 | for (i = 0; i < count; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | union ibmveth_buf_desc desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Santiago Leon | 003212c | 2010-09-03 18:29:03 +0000 | [diff] [blame] | 223 | skb = netdev_alloc_skb(adapter->netdev, pool->buff_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 225 | if (!skb) { |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 226 | netdev_dbg(adapter->netdev, |
| 227 | "replenish: unable to allocate skb\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | adapter->replenish_no_mem++; |
| 229 | break; |
| 230 | } |
| 231 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 232 | free_index = pool->consumer_index; |
Santiago Leon | a613f58 | 2010-09-03 18:28:04 +0000 | [diff] [blame] | 233 | pool->consumer_index++; |
| 234 | if (pool->consumer_index >= pool->size) |
| 235 | pool->consumer_index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | index = pool->free_map[free_index]; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 237 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 238 | BUG_ON(index == IBM_VETH_INVALID_MAP); |
| 239 | BUG_ON(pool->skbuff[index] != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
| 241 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
| 242 | pool->buff_size, DMA_FROM_DEVICE); |
| 243 | |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 244 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 245 | goto failure; |
| 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
| 248 | pool->dma_addr[index] = dma_addr; |
| 249 | pool->skbuff[index] = skb; |
| 250 | |
| 251 | correlator = ((u64)pool->index << 32) | index; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 252 | *(u64 *)skb->data = correlator; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 254 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 255 | desc.fields.address = dma_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 257 | if (rx_flush) { |
| 258 | unsigned int len = min(pool->buff_size, |
| 259 | adapter->netdev->mtu + |
| 260 | IBMVETH_BUFF_OH); |
| 261 | ibmveth_flush_buffer(skb->data, len); |
| 262 | } |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 263 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, |
| 264 | desc.desc); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 265 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 266 | if (lpar_rc != H_SUCCESS) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 267 | goto failure; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 268 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | buffers_added++; |
| 270 | adapter->replenish_add_buff_success++; |
| 271 | } |
| 272 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | mb(); |
| 275 | atomic_add(buffers_added, &(pool->available)); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 276 | return; |
| 277 | |
| 278 | failure: |
| 279 | pool->free_map[free_index] = index; |
| 280 | pool->skbuff[index] = NULL; |
| 281 | if (pool->consumer_index == 0) |
| 282 | pool->consumer_index = pool->size - 1; |
| 283 | else |
| 284 | pool->consumer_index--; |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 285 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 286 | dma_unmap_single(&adapter->vdev->dev, |
| 287 | pool->dma_addr[index], pool->buff_size, |
| 288 | DMA_FROM_DEVICE); |
| 289 | dev_kfree_skb_any(skb); |
| 290 | adapter->replenish_add_buff_failure++; |
| 291 | |
| 292 | mb(); |
| 293 | atomic_add(buffers_added, &(pool->available)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | } |
| 295 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 296 | /* replenish routine */ |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 297 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 299 | int i; |
| 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | adapter->replenish_task_cycles++; |
| 302 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 303 | for (i = (IBMVETH_NUM_BUFF_POOLS - 1); i >= 0; i--) { |
Santiago Leon | c033a6d | 2010-09-03 18:28:09 +0000 | [diff] [blame] | 304 | struct ibmveth_buff_pool *pool = &adapter->rx_buff_pool[i]; |
| 305 | |
| 306 | if (pool->active && |
| 307 | (atomic_read(&pool->available) < pool->threshold)) |
| 308 | ibmveth_replenish_buffer_pool(adapter, pool); |
| 309 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 311 | adapter->rx_no_buffer = *(u64 *)(((char*)adapter->buffer_list_addr) + |
| 312 | 4096 - 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 316 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, |
| 317 | struct ibmveth_buff_pool *pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | { |
| 319 | int i; |
| 320 | |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 321 | kfree(pool->free_map); |
| 322 | pool->free_map = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 324 | if (pool->skbuff && pool->dma_addr) { |
| 325 | for (i = 0; i < pool->size; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | struct sk_buff *skb = pool->skbuff[i]; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 327 | if (skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | dma_unmap_single(&adapter->vdev->dev, |
| 329 | pool->dma_addr[i], |
| 330 | pool->buff_size, |
| 331 | DMA_FROM_DEVICE); |
| 332 | dev_kfree_skb_any(skb); |
| 333 | pool->skbuff[i] = NULL; |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 338 | if (pool->dma_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | kfree(pool->dma_addr); |
| 340 | pool->dma_addr = NULL; |
| 341 | } |
| 342 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 343 | if (pool->skbuff) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | kfree(pool->skbuff); |
| 345 | pool->skbuff = NULL; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | /* remove a buffer from a pool */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 350 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, |
| 351 | u64 correlator) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
| 353 | unsigned int pool = correlator >> 32; |
| 354 | unsigned int index = correlator & 0xffffffffUL; |
| 355 | unsigned int free_index; |
| 356 | struct sk_buff *skb; |
| 357 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 358 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
| 359 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | skb = adapter->rx_buff_pool[pool].skbuff[index]; |
| 362 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 363 | BUG_ON(skb == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; |
| 366 | |
| 367 | dma_unmap_single(&adapter->vdev->dev, |
| 368 | adapter->rx_buff_pool[pool].dma_addr[index], |
| 369 | adapter->rx_buff_pool[pool].buff_size, |
| 370 | DMA_FROM_DEVICE); |
| 371 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 372 | free_index = adapter->rx_buff_pool[pool].producer_index; |
Santiago Leon | a613f58 | 2010-09-03 18:28:04 +0000 | [diff] [blame] | 373 | adapter->rx_buff_pool[pool].producer_index++; |
| 374 | if (adapter->rx_buff_pool[pool].producer_index >= |
| 375 | adapter->rx_buff_pool[pool].size) |
| 376 | adapter->rx_buff_pool[pool].producer_index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
| 378 | |
| 379 | mb(); |
| 380 | |
| 381 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); |
| 382 | } |
| 383 | |
| 384 | /* get the current buffer on the rx queue */ |
| 385 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) |
| 386 | { |
| 387 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; |
| 388 | unsigned int pool = correlator >> 32; |
| 389 | unsigned int index = correlator & 0xffffffffUL; |
| 390 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 391 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
| 392 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | |
| 394 | return adapter->rx_buff_pool[pool].skbuff[index]; |
| 395 | } |
| 396 | |
| 397 | /* recycle the current buffer on the rx queue */ |
| 398 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) |
| 399 | { |
| 400 | u32 q_index = adapter->rx_queue.index; |
| 401 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; |
| 402 | unsigned int pool = correlator >> 32; |
| 403 | unsigned int index = correlator & 0xffffffffUL; |
| 404 | union ibmveth_buf_desc desc; |
| 405 | unsigned long lpar_rc; |
| 406 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 407 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
| 408 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 410 | if (!adapter->rx_buff_pool[pool].active) { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 411 | ibmveth_rxq_harvest_buffer(adapter); |
| 412 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); |
| 413 | return; |
| 414 | } |
| 415 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 416 | desc.fields.flags_len = IBMVETH_BUF_VALID | |
| 417 | adapter->rx_buff_pool[pool].buff_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
| 419 | |
| 420 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 421 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 422 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 423 | netdev_dbg(adapter->netdev, "h_add_logical_lan_buffer failed " |
| 424 | "during recycle rc=%ld", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
| 426 | } |
| 427 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 428 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | adapter->rx_queue.index = 0; |
| 430 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 431 | } |
| 432 | } |
| 433 | |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 434 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | { |
| 436 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
| 437 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 438 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | adapter->rx_queue.index = 0; |
| 440 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) |
| 445 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 446 | int i; |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 447 | struct device *dev = &adapter->vdev->dev; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 448 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 449 | if (adapter->buffer_list_addr != NULL) { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 450 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
| 451 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | DMA_BIDIRECTIONAL); |
| 453 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 454 | } |
| 455 | free_page((unsigned long)adapter->buffer_list_addr); |
| 456 | adapter->buffer_list_addr = NULL; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 457 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 459 | if (adapter->filter_list_addr != NULL) { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 460 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
| 461 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | DMA_BIDIRECTIONAL); |
| 463 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 464 | } |
| 465 | free_page((unsigned long)adapter->filter_list_addr); |
| 466 | adapter->filter_list_addr = NULL; |
| 467 | } |
| 468 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 469 | if (adapter->rx_queue.queue_addr != NULL) { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 470 | if (!dma_mapping_error(dev, adapter->rx_queue.queue_dma)) { |
| 471 | dma_unmap_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | adapter->rx_queue.queue_dma, |
| 473 | adapter->rx_queue.queue_len, |
| 474 | DMA_BIDIRECTIONAL); |
| 475 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; |
| 476 | } |
| 477 | kfree(adapter->rx_queue.queue_addr); |
| 478 | adapter->rx_queue.queue_addr = NULL; |
| 479 | } |
| 480 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 481 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 482 | if (adapter->rx_buff_pool[i].active) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 483 | ibmveth_free_buffer_pool(adapter, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 484 | &adapter->rx_buff_pool[i]); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 485 | |
| 486 | if (adapter->bounce_buffer != NULL) { |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 487 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 488 | dma_unmap_single(&adapter->vdev->dev, |
| 489 | adapter->bounce_buffer_dma, |
| 490 | adapter->netdev->mtu + IBMVETH_BUFF_OH, |
| 491 | DMA_BIDIRECTIONAL); |
| 492 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; |
| 493 | } |
| 494 | kfree(adapter->bounce_buffer); |
| 495 | adapter->bounce_buffer = NULL; |
| 496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | } |
| 498 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 499 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
| 500 | union ibmveth_buf_desc rxq_desc, u64 mac_address) |
| 501 | { |
| 502 | int rc, try_again = 1; |
| 503 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 504 | /* |
| 505 | * After a kexec the adapter will still be open, so our attempt to |
| 506 | * open it will fail. So if we get a failure we free the adapter and |
| 507 | * try again, but only once. |
| 508 | */ |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 509 | retry: |
| 510 | rc = h_register_logical_lan(adapter->vdev->unit_address, |
| 511 | adapter->buffer_list_dma, rxq_desc.desc, |
| 512 | adapter->filter_list_dma, mac_address); |
| 513 | |
| 514 | if (rc != H_SUCCESS && try_again) { |
| 515 | do { |
| 516 | rc = h_free_logical_lan(adapter->vdev->unit_address); |
| 517 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
| 518 | |
| 519 | try_again = 0; |
| 520 | goto retry; |
| 521 | } |
| 522 | |
| 523 | return rc; |
| 524 | } |
| 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | static int ibmveth_open(struct net_device *netdev) |
| 527 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 528 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | u64 mac_address = 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 530 | int rxq_entries = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | unsigned long lpar_rc; |
| 532 | int rc; |
| 533 | union ibmveth_buf_desc rxq_desc; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 534 | int i; |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 535 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 537 | netdev_dbg(netdev, "open starting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 539 | napi_enable(&adapter->napi); |
| 540 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 541 | for(i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 542 | rxq_entries += adapter->rx_buff_pool[i].size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
| 545 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 546 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 547 | if (!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 548 | netdev_err(netdev, "unable to allocate filter or buffer list " |
| 549 | "pages\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 550 | rc = -ENOMEM; |
| 551 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 554 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * |
| 555 | rxq_entries; |
| 556 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, |
| 557 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 559 | if (!adapter->rx_queue.queue_addr) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 560 | netdev_err(netdev, "unable to allocate rx queue pages\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 561 | rc = -ENOMEM; |
| 562 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | } |
| 564 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 565 | dev = &adapter->vdev->dev; |
| 566 | |
| 567 | adapter->buffer_list_dma = dma_map_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 569 | adapter->filter_list_dma = dma_map_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 571 | adapter->rx_queue.queue_dma = dma_map_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | adapter->rx_queue.queue_addr, |
| 573 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); |
| 574 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 575 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
| 576 | (dma_mapping_error(dev, adapter->filter_list_dma)) || |
| 577 | (dma_mapping_error(dev, adapter->rx_queue.queue_dma))) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 578 | netdev_err(netdev, "unable to map filter or buffer list " |
| 579 | "pages\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 580 | rc = -ENOMEM; |
| 581 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | adapter->rx_queue.index = 0; |
| 585 | adapter->rx_queue.num_slots = rxq_entries; |
| 586 | adapter->rx_queue.toggle = 1; |
| 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
| 589 | mac_address = mac_address >> 16; |
| 590 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 591 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | |
| 592 | adapter->rx_queue.queue_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
| 594 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 595 | netdev_dbg(netdev, "buffer list @ 0x%p\n", adapter->buffer_list_addr); |
| 596 | netdev_dbg(netdev, "filter list @ 0x%p\n", adapter->filter_list_addr); |
| 597 | netdev_dbg(netdev, "receive q @ 0x%p\n", adapter->rx_queue.queue_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Santiago Leon | 4347ef1 | 2006-10-03 12:24:34 -0500 | [diff] [blame] | 599 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
| 600 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 601 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 603 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 604 | netdev_err(netdev, "h_register_logical_lan failed with %ld\n", |
| 605 | lpar_rc); |
| 606 | netdev_err(netdev, "buffer TCE:0x%llx filter TCE:0x%llx rxq " |
| 607 | "desc:0x%llx MAC:0x%llx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | adapter->buffer_list_dma, |
| 609 | adapter->filter_list_dma, |
| 610 | rxq_desc.desc, |
| 611 | mac_address); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 612 | rc = -ENONET; |
| 613 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 616 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
| 617 | if (!adapter->rx_buff_pool[i].active) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 618 | continue; |
| 619 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 620 | netdev_err(netdev, "unable to alloc pool\n"); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 621 | adapter->rx_buff_pool[i].active = 0; |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 622 | rc = -ENOMEM; |
| 623 | goto err_out; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 624 | } |
| 625 | } |
| 626 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 627 | netdev_dbg(netdev, "registering irq 0x%x\n", netdev->irq); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 628 | rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, |
| 629 | netdev); |
| 630 | if (rc != 0) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 631 | netdev_err(netdev, "unable to request irq 0x%x, rc %d\n", |
| 632 | netdev->irq, rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | do { |
| 634 | rc = h_free_logical_lan(adapter->vdev->unit_address); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 635 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 637 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
| 639 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 640 | adapter->bounce_buffer = |
| 641 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); |
| 642 | if (!adapter->bounce_buffer) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 643 | netdev_err(netdev, "unable to allocate bounce buffer\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 644 | rc = -ENOMEM; |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 645 | goto err_out_free_irq; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 646 | } |
| 647 | adapter->bounce_buffer_dma = |
| 648 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, |
| 649 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 650 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 651 | netdev_err(netdev, "unable to map bounce buffer\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 652 | rc = -ENOMEM; |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 653 | goto err_out_free_irq; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 654 | } |
| 655 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 656 | netdev_dbg(netdev, "initial replenish cycle\n"); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 657 | ibmveth_interrupt(netdev->irq, netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 659 | netif_start_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 661 | netdev_dbg(netdev, "open complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
| 663 | return 0; |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 664 | |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 665 | err_out_free_irq: |
| 666 | free_irq(netdev->irq, netdev); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 667 | err_out: |
| 668 | ibmveth_cleanup(adapter); |
| 669 | napi_disable(&adapter->napi); |
| 670 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | static int ibmveth_close(struct net_device *netdev) |
| 674 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 675 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | long lpar_rc; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 677 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 678 | netdev_dbg(netdev, "close starting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 680 | napi_disable(&adapter->napi); |
| 681 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 682 | if (!adapter->pool_config) |
| 683 | netif_stop_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
Robert Jennings | ee2e611 | 2010-07-16 04:57:25 +0000 | [diff] [blame] | 685 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | do { |
| 688 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 689 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 691 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 692 | netdev_err(netdev, "h_free_logical_lan failed with %lx, " |
| 693 | "continuing with close\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } |
| 695 | |
Robert Jennings | ee2e611 | 2010-07-16 04:57:25 +0000 | [diff] [blame] | 696 | free_irq(netdev->irq, netdev); |
| 697 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 698 | adapter->rx_no_buffer = *(u64 *)(((char *)adapter->buffer_list_addr) + |
| 699 | 4096 - 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
| 701 | ibmveth_cleanup(adapter); |
| 702 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 703 | netdev_dbg(netdev, "close complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
| 705 | return 0; |
| 706 | } |
| 707 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 708 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 709 | { |
| 710 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | |
| 711 | SUPPORTED_FIBRE); |
| 712 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
| 713 | ADVERTISED_FIBRE); |
David Decotigny | 7073949 | 2011-04-27 18:32:40 +0000 | [diff] [blame] | 714 | ethtool_cmd_speed_set(cmd, SPEED_1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | cmd->duplex = DUPLEX_FULL; |
| 716 | cmd->port = PORT_FIBRE; |
| 717 | cmd->phy_address = 0; |
| 718 | cmd->transceiver = XCVR_INTERNAL; |
| 719 | cmd->autoneg = AUTONEG_ENABLE; |
| 720 | cmd->maxtxpkt = 0; |
| 721 | cmd->maxrxpkt = 1; |
| 722 | return 0; |
| 723 | } |
| 724 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 725 | static void netdev_get_drvinfo(struct net_device *dev, |
| 726 | struct ethtool_drvinfo *info) |
| 727 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 729 | strncpy(info->version, ibmveth_driver_version, |
| 730 | sizeof(info->version) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | } |
| 732 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 733 | static u32 ibmveth_fix_features(struct net_device *dev, u32 features) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 734 | { |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 735 | /* |
| 736 | * Since the ibmveth firmware interface does not have the |
| 737 | * concept of separate tx/rx checksum offload enable, if rx |
| 738 | * checksum is disabled we also have to disable tx checksum |
| 739 | * offload. Once we disable rx checksum offload, we are no |
| 740 | * longer allowed to send tx buffers that are not properly |
| 741 | * checksummed. |
| 742 | */ |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 743 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 744 | if (!(features & NETIF_F_RXCSUM)) |
| 745 | features &= ~NETIF_F_ALL_CSUM; |
| 746 | |
| 747 | return features; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 748 | } |
| 749 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 750 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 751 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 752 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Stephen Rothwell | ff5bfc3 | 2009-01-06 10:47:44 -0800 | [diff] [blame] | 753 | unsigned long set_attr, clr_attr, ret_attr; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 754 | unsigned long set_attr6, clr_attr6; |
| 755 | long ret, ret6; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 756 | int rc1 = 0, rc2 = 0; |
| 757 | int restart = 0; |
| 758 | |
| 759 | if (netif_running(dev)) { |
| 760 | restart = 1; |
| 761 | adapter->pool_config = 1; |
| 762 | ibmveth_close(dev); |
| 763 | adapter->pool_config = 0; |
| 764 | } |
| 765 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 766 | set_attr = 0; |
| 767 | clr_attr = 0; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 768 | |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 769 | if (data) { |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 770 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 771 | set_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
| 772 | } else { |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 773 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 774 | clr_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
| 775 | } |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 776 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 777 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 778 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 779 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
| 780 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && |
| 781 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { |
| 782 | ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr, |
| 783 | set_attr, &ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 784 | |
| 785 | if (ret != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 786 | netdev_err(dev, "unable to change IPv4 checksum " |
| 787 | "offload settings. %d rc=%ld\n", |
| 788 | data, ret); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 789 | |
| 790 | ret = h_illan_attributes(adapter->vdev->unit_address, |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 791 | set_attr, clr_attr, &ret_attr); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 792 | } else { |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 793 | adapter->fw_ipv4_csum_support = data; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 794 | } |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 795 | |
| 796 | ret6 = h_illan_attributes(adapter->vdev->unit_address, |
| 797 | clr_attr6, set_attr6, &ret_attr); |
| 798 | |
| 799 | if (ret6 != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 800 | netdev_err(dev, "unable to change IPv6 checksum " |
| 801 | "offload settings. %d rc=%ld\n", |
| 802 | data, ret); |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 803 | |
| 804 | ret = h_illan_attributes(adapter->vdev->unit_address, |
| 805 | set_attr6, clr_attr6, |
| 806 | &ret_attr); |
| 807 | } else |
| 808 | adapter->fw_ipv6_csum_support = data; |
| 809 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 810 | if (ret != H_SUCCESS || ret6 != H_SUCCESS) |
| 811 | adapter->rx_csum = data; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 812 | else |
| 813 | rc1 = -EIO; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 814 | } else { |
| 815 | rc1 = -EIO; |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 816 | netdev_err(dev, "unable to change checksum offload settings." |
| 817 | " %d rc=%ld ret_attr=%lx\n", data, ret, |
| 818 | ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 819 | } |
| 820 | |
| 821 | if (restart) |
| 822 | rc2 = ibmveth_open(dev); |
| 823 | |
| 824 | return rc1 ? rc1 : rc2; |
| 825 | } |
| 826 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 827 | static int ibmveth_set_features(struct net_device *dev, u32 features) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 828 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 829 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 830 | int rx_csum = !!(features & NETIF_F_RXCSUM); |
| 831 | int rc; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 832 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 833 | if (rx_csum == adapter->rx_csum) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 834 | return 0; |
| 835 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 836 | rc = ibmveth_set_csum_offload(dev, rx_csum); |
| 837 | if (rc && !adapter->rx_csum) |
| 838 | dev->features = features & ~(NETIF_F_ALL_CSUM | NETIF_F_RXCSUM); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 839 | |
| 840 | return rc; |
| 841 | } |
| 842 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 843 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
| 844 | { |
| 845 | int i; |
| 846 | |
| 847 | if (stringset != ETH_SS_STATS) |
| 848 | return; |
| 849 | |
| 850 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) |
| 851 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); |
| 852 | } |
| 853 | |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 854 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 855 | { |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 856 | switch (sset) { |
| 857 | case ETH_SS_STATS: |
| 858 | return ARRAY_SIZE(ibmveth_stats); |
| 859 | default: |
| 860 | return -EOPNOTSUPP; |
| 861 | } |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | static void ibmveth_get_ethtool_stats(struct net_device *dev, |
| 865 | struct ethtool_stats *stats, u64 *data) |
| 866 | { |
| 867 | int i; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 868 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 869 | |
| 870 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) |
| 871 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); |
| 872 | } |
| 873 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 874 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | .get_drvinfo = netdev_get_drvinfo, |
| 876 | .get_settings = netdev_get_settings, |
Ben Hutchings | ed4ba4b | 2010-12-09 12:10:25 +0000 | [diff] [blame] | 877 | .get_link = ethtool_op_get_link, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 878 | .get_strings = ibmveth_get_strings, |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 879 | .get_sset_count = ibmveth_get_sset_count, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 880 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | }; |
| 882 | |
| 883 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 884 | { |
| 885 | return -EOPNOTSUPP; |
| 886 | } |
| 887 | |
| 888 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) |
| 889 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 890 | static int ibmveth_send(struct ibmveth_adapter *adapter, |
| 891 | union ibmveth_buf_desc *descs) |
| 892 | { |
| 893 | unsigned long correlator; |
| 894 | unsigned int retry_count; |
| 895 | unsigned long ret; |
| 896 | |
| 897 | /* |
| 898 | * The retry count sets a maximum for the number of broadcast and |
| 899 | * multicast destinations within the system. |
| 900 | */ |
| 901 | retry_count = 1024; |
| 902 | correlator = 0; |
| 903 | do { |
| 904 | ret = h_send_logical_lan(adapter->vdev->unit_address, |
| 905 | descs[0].desc, descs[1].desc, |
| 906 | descs[2].desc, descs[3].desc, |
| 907 | descs[4].desc, descs[5].desc, |
| 908 | correlator, &correlator); |
| 909 | } while ((ret == H_BUSY) && (retry_count--)); |
| 910 | |
| 911 | if (ret != H_SUCCESS && ret != H_DROPPED) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 912 | netdev_err(adapter->netdev, "tx: h_send_logical_lan failed " |
| 913 | "with rc=%ld\n", ret); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 914 | return 1; |
| 915 | } |
| 916 | |
| 917 | return 0; |
| 918 | } |
| 919 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 920 | static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, |
| 921 | struct net_device *netdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 923 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 924 | unsigned int desc_flags; |
| 925 | union ibmveth_buf_desc descs[6]; |
| 926 | int last, i; |
| 927 | int force_bounce = 0; |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 928 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 929 | /* |
| 930 | * veth handles a maximum of 6 segments including the header, so |
| 931 | * we have to linearize the skb if there are more than this. |
| 932 | */ |
| 933 | if (skb_shinfo(skb)->nr_frags > 5 && __skb_linearize(skb)) { |
| 934 | netdev->stats.tx_dropped++; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 935 | goto out; |
| 936 | } |
| 937 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 938 | /* veth can't checksum offload UDP */ |
| 939 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 940 | ((skb->protocol == htons(ETH_P_IP) && |
| 941 | ip_hdr(skb)->protocol != IPPROTO_TCP) || |
| 942 | (skb->protocol == htons(ETH_P_IPV6) && |
| 943 | ipv6_hdr(skb)->nexthdr != IPPROTO_TCP)) && |
| 944 | skb_checksum_help(skb)) { |
| 945 | |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 946 | netdev_err(netdev, "tx: failed to checksum packet\n"); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 947 | netdev->stats.tx_dropped++; |
| 948 | goto out; |
| 949 | } |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 950 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 951 | desc_flags = IBMVETH_BUF_VALID; |
| 952 | |
| 953 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| 954 | unsigned char *buf = skb_transport_header(skb) + |
| 955 | skb->csum_offset; |
| 956 | |
| 957 | desc_flags |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 958 | |
| 959 | /* Need to zero out the checksum */ |
| 960 | buf[0] = 0; |
| 961 | buf[1] = 0; |
| 962 | } |
| 963 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 964 | retry_bounce: |
| 965 | memset(descs, 0, sizeof(descs)); |
Santiago Leon | c08cc3c | 2010-09-03 18:28:20 +0000 | [diff] [blame] | 966 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 967 | /* |
| 968 | * If a linear packet is below the rx threshold then |
| 969 | * copy it into the static bounce buffer. This avoids the |
| 970 | * cost of a TCE insert and remove. |
| 971 | */ |
| 972 | if (force_bounce || (!skb_is_nonlinear(skb) && |
| 973 | (skb->len < tx_copybreak))) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 974 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, |
| 975 | skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 977 | descs[0].fields.flags_len = desc_flags | skb->len; |
| 978 | descs[0].fields.address = adapter->bounce_buffer_dma; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 979 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 980 | if (ibmveth_send(adapter, descs)) { |
| 981 | adapter->tx_send_failed++; |
| 982 | netdev->stats.tx_dropped++; |
| 983 | } else { |
| 984 | netdev->stats.tx_packets++; |
| 985 | netdev->stats.tx_bytes += skb->len; |
| 986 | } |
| 987 | |
| 988 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
| 990 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 991 | /* Map the header */ |
| 992 | descs[0].fields.address = dma_map_single(&adapter->vdev->dev, skb->data, |
| 993 | skb_headlen(skb), |
| 994 | DMA_TO_DEVICE); |
| 995 | if (dma_mapping_error(&adapter->vdev->dev, descs[0].fields.address)) |
| 996 | goto map_failed; |
| 997 | |
| 998 | descs[0].fields.flags_len = desc_flags | skb_headlen(skb); |
| 999 | |
| 1000 | /* Map the frags */ |
| 1001 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| 1002 | unsigned long dma_addr; |
| 1003 | skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
| 1004 | |
| 1005 | dma_addr = dma_map_page(&adapter->vdev->dev, frag->page, |
| 1006 | frag->page_offset, frag->size, |
| 1007 | DMA_TO_DEVICE); |
| 1008 | |
| 1009 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
| 1010 | goto map_failed_frags; |
| 1011 | |
| 1012 | descs[i+1].fields.flags_len = desc_flags | frag->size; |
| 1013 | descs[i+1].fields.address = dma_addr; |
| 1014 | } |
| 1015 | |
| 1016 | if (ibmveth_send(adapter, descs)) { |
| 1017 | adapter->tx_send_failed++; |
| 1018 | netdev->stats.tx_dropped++; |
| 1019 | } else { |
| 1020 | netdev->stats.tx_packets++; |
| 1021 | netdev->stats.tx_bytes += skb->len; |
| 1022 | } |
| 1023 | |
| 1024 | for (i = 0; i < skb_shinfo(skb)->nr_frags + 1; i++) |
| 1025 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, |
| 1026 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, |
| 1027 | DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
Santiago Leon | e8cb7eb | 2010-09-03 18:28:15 +0000 | [diff] [blame] | 1029 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1031 | return NETDEV_TX_OK; |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1032 | |
| 1033 | map_failed_frags: |
| 1034 | last = i+1; |
| 1035 | for (i = 0; i < last; i++) |
| 1036 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, |
| 1037 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, |
| 1038 | DMA_TO_DEVICE); |
| 1039 | |
| 1040 | map_failed: |
| 1041 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1042 | netdev_err(netdev, "tx: unable to map xmit buffer\n"); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1043 | adapter->tx_map_failed++; |
| 1044 | skb_linearize(skb); |
| 1045 | force_bounce = 1; |
| 1046 | goto retry_bounce; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | } |
| 1048 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1049 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1051 | struct ibmveth_adapter *adapter = |
| 1052 | container_of(napi, struct ibmveth_adapter, napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1053 | struct net_device *netdev = adapter->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | int frames_processed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | unsigned long lpar_rc; |
| 1056 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1057 | restart_poll: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | do { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1059 | if (!ibmveth_rxq_pending_buffer(adapter)) |
| 1060 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | |
Anton Blanchard | f89e49e | 2010-09-06 18:21:41 -0700 | [diff] [blame] | 1062 | smp_rmb(); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1063 | if (!ibmveth_rxq_buffer_valid(adapter)) { |
| 1064 | wmb(); /* suggested by larson1 */ |
| 1065 | adapter->rx_invalid_buffer++; |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1066 | netdev_dbg(netdev, "recycling invalid buffer\n"); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1067 | ibmveth_rxq_recycle_buffer(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | } else { |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1069 | struct sk_buff *skb, *new_skb; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1070 | int length = ibmveth_rxq_frame_length(adapter); |
| 1071 | int offset = ibmveth_rxq_frame_offset(adapter); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1072 | int csum_good = ibmveth_rxq_csum_good(adapter); |
| 1073 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1074 | skb = ibmveth_rxq_get_buffer(adapter); |
| 1075 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1076 | new_skb = NULL; |
| 1077 | if (length < rx_copybreak) |
| 1078 | new_skb = netdev_alloc_skb(netdev, length); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1079 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1080 | if (new_skb) { |
| 1081 | skb_copy_to_linear_data(new_skb, |
| 1082 | skb->data + offset, |
| 1083 | length); |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 1084 | if (rx_flush) |
| 1085 | ibmveth_flush_buffer(skb->data, |
| 1086 | length + offset); |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1087 | skb = new_skb; |
| 1088 | ibmveth_rxq_recycle_buffer(adapter); |
| 1089 | } else { |
| 1090 | ibmveth_rxq_harvest_buffer(adapter); |
| 1091 | skb_reserve(skb, offset); |
| 1092 | } |
| 1093 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1094 | skb_put(skb, length); |
| 1095 | skb->protocol = eth_type_trans(skb, netdev); |
| 1096 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1097 | if (csum_good) |
| 1098 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1099 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1100 | netif_receive_skb(skb); /* send it up */ |
| 1101 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1102 | netdev->stats.rx_packets++; |
| 1103 | netdev->stats.rx_bytes += length; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1104 | frames_processed++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1106 | } while (frames_processed < budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 1108 | ibmveth_replenish_task(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1110 | if (frames_processed < budget) { |
| 1111 | /* We think we are done - reenable interrupts, |
| 1112 | * then check once more to make sure we are done. |
| 1113 | */ |
| 1114 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1115 | VIO_IRQ_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 1117 | BUG_ON(lpar_rc != H_SUCCESS); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1118 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1119 | napi_complete(napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1120 | |
| 1121 | if (ibmveth_rxq_pending_buffer(adapter) && |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1122 | napi_reschedule(napi)) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1123 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1124 | VIO_IRQ_DISABLE); |
| 1125 | goto restart_poll; |
| 1126 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | } |
| 1128 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1129 | return frames_processed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | } |
| 1131 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1132 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1133 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | struct net_device *netdev = dev_instance; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1135 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | unsigned long lpar_rc; |
| 1137 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1138 | if (napi_schedule_prep(&adapter->napi)) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1139 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1140 | VIO_IRQ_DISABLE); |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 1141 | BUG_ON(lpar_rc != H_SUCCESS); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1142 | __napi_schedule(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | } |
| 1144 | return IRQ_HANDLED; |
| 1145 | } |
| 1146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
| 1148 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1149 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | unsigned long lpar_rc; |
| 1151 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1152 | if ((netdev->flags & IFF_PROMISC) || |
| 1153 | (netdev_mc_count(netdev) > adapter->mcastFilterSize)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1155 | IbmVethMcastEnableRecv | |
| 1156 | IbmVethMcastDisableFiltering, |
| 1157 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1158 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1159 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1160 | "entering promisc mode\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | } |
| 1162 | } else { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1163 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | /* clear the filter table & disable filtering */ |
| 1165 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1166 | IbmVethMcastEnableRecv | |
| 1167 | IbmVethMcastDisableFiltering | |
| 1168 | IbmVethMcastClearFilterTable, |
| 1169 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1170 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1171 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1172 | "attempting to clear filter table\n", |
| 1173 | lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
| 1175 | /* add the addresses to the filter table */ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1176 | netdev_for_each_mc_addr(ha, netdev) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1177 | /* add the multicast address to the filter table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | unsigned long mcast_addr = 0; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1179 | memcpy(((char *)&mcast_addr)+2, ha->addr, 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1181 | IbmVethMcastAddFilter, |
| 1182 | mcast_addr); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1183 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1184 | netdev_err(netdev, "h_multicast_ctrl rc=%ld " |
| 1185 | "when adding an entry to the filter " |
| 1186 | "table\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | } |
| 1188 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | /* re-enable filtering */ |
| 1191 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1192 | IbmVethMcastEnableFiltering, |
| 1193 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1194 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1195 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1196 | "enabling filtering\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | } |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) |
| 1202 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1203 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1204 | struct vio_dev *viodev = adapter->vdev; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1205 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1206 | int i, rc; |
| 1207 | int need_restart = 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1208 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1209 | if (new_mtu < IBMVETH_MIN_MTU) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | return -EINVAL; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1211 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1212 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1213 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) |
| 1214 | break; |
| 1215 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1216 | if (i == IBMVETH_NUM_BUFF_POOLS) |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1217 | return -EINVAL; |
| 1218 | |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1219 | /* Deactivate all the buffer pools so that the next loop can activate |
| 1220 | only the buffer pools necessary to hold the new MTU */ |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1221 | if (netif_running(adapter->netdev)) { |
| 1222 | need_restart = 1; |
| 1223 | adapter->pool_config = 1; |
| 1224 | ibmveth_close(adapter->netdev); |
| 1225 | adapter->pool_config = 0; |
| 1226 | } |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1227 | |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1228 | /* Look for an active buffer pool that can hold the new MTU */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1229 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1230 | adapter->rx_buff_pool[i].active = 1; |
| 1231 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1232 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1233 | dev->mtu = new_mtu; |
| 1234 | vio_cmo_set_dev_desired(viodev, |
| 1235 | ibmveth_get_desired_dma |
| 1236 | (viodev)); |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1237 | if (need_restart) { |
| 1238 | return ibmveth_open(adapter->netdev); |
| 1239 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1240 | return 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1241 | } |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1242 | } |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1243 | |
| 1244 | if (need_restart && (rc = ibmveth_open(adapter->netdev))) |
| 1245 | return rc; |
| 1246 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1247 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | } |
| 1249 | |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1250 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1251 | static void ibmveth_poll_controller(struct net_device *dev) |
| 1252 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1253 | ibmveth_replenish_task(netdev_priv(dev)); |
Andrew Morton | 5f77113 | 2006-10-10 14:33:30 -0700 | [diff] [blame] | 1254 | ibmveth_interrupt(dev->irq, dev); |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1255 | } |
| 1256 | #endif |
| 1257 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1258 | /** |
| 1259 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver |
| 1260 | * |
| 1261 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned |
| 1262 | * |
| 1263 | * Return value: |
| 1264 | * Number of bytes of IO data the driver will need to perform well. |
| 1265 | */ |
| 1266 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) |
| 1267 | { |
| 1268 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); |
| 1269 | struct ibmveth_adapter *adapter; |
| 1270 | unsigned long ret; |
| 1271 | int i; |
| 1272 | int rxqentries = 1; |
| 1273 | |
| 1274 | /* netdev inits at probe time along with the structures we need below*/ |
| 1275 | if (netdev == NULL) |
| 1276 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT); |
| 1277 | |
| 1278 | adapter = netdev_priv(netdev); |
| 1279 | |
| 1280 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; |
| 1281 | ret += IOMMU_PAGE_ALIGN(netdev->mtu); |
| 1282 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1283 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1284 | /* add the size of the active receive buffers */ |
| 1285 | if (adapter->rx_buff_pool[i].active) |
| 1286 | ret += |
| 1287 | adapter->rx_buff_pool[i].size * |
| 1288 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. |
| 1289 | buff_size); |
| 1290 | rxqentries += adapter->rx_buff_pool[i].size; |
| 1291 | } |
| 1292 | /* add the size of the receive queue entries */ |
| 1293 | ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry)); |
| 1294 | |
| 1295 | return ret; |
| 1296 | } |
| 1297 | |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1298 | static const struct net_device_ops ibmveth_netdev_ops = { |
| 1299 | .ndo_open = ibmveth_open, |
| 1300 | .ndo_stop = ibmveth_close, |
| 1301 | .ndo_start_xmit = ibmveth_start_xmit, |
| 1302 | .ndo_set_multicast_list = ibmveth_set_multicast_list, |
| 1303 | .ndo_do_ioctl = ibmveth_ioctl, |
| 1304 | .ndo_change_mtu = ibmveth_change_mtu, |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 1305 | .ndo_fix_features = ibmveth_fix_features, |
| 1306 | .ndo_set_features = ibmveth_set_features, |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1307 | .ndo_validate_addr = eth_validate_addr, |
| 1308 | .ndo_set_mac_address = eth_mac_addr, |
| 1309 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1310 | .ndo_poll_controller = ibmveth_poll_controller, |
| 1311 | #endif |
| 1312 | }; |
| 1313 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1314 | static int __devinit ibmveth_probe(struct vio_dev *dev, |
| 1315 | const struct vio_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1317 | int rc, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | struct net_device *netdev; |
Mariusz Kozlowski | 9dc83af | 2007-08-06 23:44:03 +0200 | [diff] [blame] | 1319 | struct ibmveth_adapter *adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | unsigned char *mac_addr_p; |
| 1321 | unsigned int *mcastFilterSize_p; |
| 1322 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1323 | dev_dbg(&dev->dev, "entering ibmveth_probe for UA 0x%x\n", |
| 1324 | dev->unit_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1326 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, VETH_MAC_ADDR, |
| 1327 | NULL); |
| 1328 | if (!mac_addr_p) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1329 | dev_err(&dev->dev, "Can't find VETH_MAC_ADDR attribute\n"); |
Santiago Leon | be35ae9 | 2010-09-03 18:29:36 +0000 | [diff] [blame] | 1330 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1332 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1333 | mcastFilterSize_p = (unsigned int *)vio_get_attribute(dev, |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 1334 | VETH_MCAST_FILTER_SIZE, NULL); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1335 | if (!mcastFilterSize_p) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1336 | dev_err(&dev->dev, "Can't find VETH_MCAST_FILTER_SIZE " |
| 1337 | "attribute\n"); |
Santiago Leon | be35ae9 | 2010-09-03 18:29:36 +0000 | [diff] [blame] | 1338 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
| 1342 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1343 | if (!netdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | return -ENOMEM; |
| 1345 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1346 | adapter = netdev_priv(netdev); |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1347 | dev_set_drvdata(&dev->dev, netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | |
| 1349 | adapter->vdev = dev; |
| 1350 | adapter->netdev = netdev; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1351 | adapter->mcastFilterSize = *mcastFilterSize_p; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1352 | adapter->pool_config = 0; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1353 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1354 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
| 1355 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1356 | /* |
| 1357 | * Some older boxes running PHYP non-natively have an OF that returns |
| 1358 | * a 8-byte local-mac-address field (and the first 2 bytes have to be |
| 1359 | * ignored) while newer boxes' OF return a 6-byte field. Note that |
| 1360 | * IEEE 1275 specifies that local-mac-address must be a 6-byte field. |
| 1361 | * The RPA doc specifies that the first byte must be 10b, so we'll |
| 1362 | * just look for it to solve this 8 vs. 6 byte field issue |
| 1363 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | if ((*mac_addr_p & 0x3) != 0x02) |
| 1365 | mac_addr_p += 2; |
| 1366 | |
| 1367 | adapter->mac_addr = 0; |
| 1368 | memcpy(&adapter->mac_addr, mac_addr_p, 6); |
| 1369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | netdev->irq = dev->irq; |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1371 | netdev->netdev_ops = &ibmveth_netdev_ops; |
| 1372 | netdev->ethtool_ops = &netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | SET_NETDEV_DEV(netdev, &dev->dev); |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 1374 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
| 1375 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; |
| 1376 | netdev->features |= netdev->hw_features; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | |
Stephen Rothwell | d44b5e0 | 2009-05-11 21:44:51 +0000 | [diff] [blame] | 1378 | memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1380 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1381 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; |
Greg Kroah-Hartman | 8dde2a9 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 1382 | int error; |
| 1383 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1384 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
| 1385 | pool_count[i], pool_size[i], |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1386 | pool_active[i]); |
Greg Kroah-Hartman | 8dde2a9 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 1387 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
| 1388 | &dev->dev.kobj, "pool%d", i); |
| 1389 | if (!error) |
| 1390 | kobject_uevent(kobj, KOBJ_ADD); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1391 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1393 | netdev_dbg(netdev, "adapter @ 0x%p\n", adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 1396 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 1397 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; |
| 1398 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1399 | netdev_dbg(netdev, "registering netdev...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | |
Michał Mirosław | b801a4e | 2011-04-28 11:59:15 +1000 | [diff] [blame] | 1401 | ibmveth_set_features(netdev, netdev->features); |
| 1402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | rc = register_netdev(netdev); |
| 1404 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1405 | if (rc) { |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1406 | netdev_dbg(netdev, "failed to register netdev rc=%d\n", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | free_netdev(netdev); |
| 1408 | return rc; |
| 1409 | } |
| 1410 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1411 | netdev_dbg(netdev, "registered\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | return 0; |
| 1414 | } |
| 1415 | |
| 1416 | static int __devexit ibmveth_remove(struct vio_dev *dev) |
| 1417 | { |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1418 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1419 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1420 | int i; |
| 1421 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1422 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 1423 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | |
| 1425 | unregister_netdev(netdev); |
| 1426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | free_netdev(netdev); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1428 | dev_set_drvdata(&dev->dev, NULL); |
| 1429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | return 0; |
| 1431 | } |
| 1432 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1433 | static struct attribute veth_active_attr; |
| 1434 | static struct attribute veth_num_attr; |
| 1435 | static struct attribute veth_size_attr; |
| 1436 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1437 | static ssize_t veth_pool_show(struct kobject *kobj, |
| 1438 | struct attribute *attr, char *buf) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1439 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1440 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1441 | struct ibmveth_buff_pool, |
| 1442 | kobj); |
| 1443 | |
| 1444 | if (attr == &veth_active_attr) |
| 1445 | return sprintf(buf, "%d\n", pool->active); |
| 1446 | else if (attr == &veth_num_attr) |
| 1447 | return sprintf(buf, "%d\n", pool->size); |
| 1448 | else if (attr == &veth_size_attr) |
| 1449 | return sprintf(buf, "%d\n", pool->buff_size); |
| 1450 | return 0; |
| 1451 | } |
| 1452 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1453 | static ssize_t veth_pool_store(struct kobject *kobj, struct attribute *attr, |
| 1454 | const char *buf, size_t count) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1455 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1456 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1457 | struct ibmveth_buff_pool, |
| 1458 | kobj); |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1459 | struct net_device *netdev = dev_get_drvdata( |
| 1460 | container_of(kobj->parent, struct device, kobj)); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1461 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1462 | long value = simple_strtol(buf, NULL, 10); |
| 1463 | long rc; |
| 1464 | |
| 1465 | if (attr == &veth_active_attr) { |
| 1466 | if (value && !pool->active) { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1467 | if (netif_running(netdev)) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1468 | if (ibmveth_alloc_buffer_pool(pool)) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1469 | netdev_err(netdev, |
| 1470 | "unable to alloc pool\n"); |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1471 | return -ENOMEM; |
| 1472 | } |
| 1473 | pool->active = 1; |
| 1474 | adapter->pool_config = 1; |
| 1475 | ibmveth_close(netdev); |
| 1476 | adapter->pool_config = 0; |
| 1477 | if ((rc = ibmveth_open(netdev))) |
| 1478 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1479 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1480 | pool->active = 1; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1481 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1482 | } else if (!value && pool->active) { |
| 1483 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; |
| 1484 | int i; |
| 1485 | /* Make sure there is a buffer pool with buffers that |
| 1486 | can hold a packet of the size of the MTU */ |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1487 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1488 | if (pool == &adapter->rx_buff_pool[i]) |
| 1489 | continue; |
| 1490 | if (!adapter->rx_buff_pool[i].active) |
| 1491 | continue; |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1492 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
| 1493 | break; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1494 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1495 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1496 | if (i == IBMVETH_NUM_BUFF_POOLS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1497 | netdev_err(netdev, "no active pool >= MTU\n"); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1498 | return -EPERM; |
| 1499 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1500 | |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1501 | if (netif_running(netdev)) { |
| 1502 | adapter->pool_config = 1; |
| 1503 | ibmveth_close(netdev); |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1504 | pool->active = 0; |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1505 | adapter->pool_config = 0; |
| 1506 | if ((rc = ibmveth_open(netdev))) |
| 1507 | return rc; |
| 1508 | } |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1509 | pool->active = 0; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1510 | } |
| 1511 | } else if (attr == &veth_num_attr) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1512 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1513 | return -EINVAL; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1514 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1515 | if (netif_running(netdev)) { |
| 1516 | adapter->pool_config = 1; |
| 1517 | ibmveth_close(netdev); |
| 1518 | adapter->pool_config = 0; |
| 1519 | pool->size = value; |
| 1520 | if ((rc = ibmveth_open(netdev))) |
| 1521 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1522 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1523 | pool->size = value; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1524 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1525 | } |
| 1526 | } else if (attr == &veth_size_attr) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1527 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1528 | return -EINVAL; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1529 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1530 | if (netif_running(netdev)) { |
| 1531 | adapter->pool_config = 1; |
| 1532 | ibmveth_close(netdev); |
| 1533 | adapter->pool_config = 0; |
| 1534 | pool->buff_size = value; |
| 1535 | if ((rc = ibmveth_open(netdev))) |
| 1536 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1537 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1538 | pool->buff_size = value; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1539 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1540 | } |
| 1541 | } |
| 1542 | |
| 1543 | /* kick the interrupt handler to allocate/deallocate pools */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1544 | ibmveth_interrupt(netdev->irq, netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1545 | return count; |
| 1546 | } |
| 1547 | |
| 1548 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1549 | #define ATTR(_name, _mode) \ |
| 1550 | struct attribute veth_##_name##_attr = { \ |
| 1551 | .name = __stringify(_name), .mode = _mode, \ |
| 1552 | }; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1553 | |
| 1554 | static ATTR(active, 0644); |
| 1555 | static ATTR(num, 0644); |
| 1556 | static ATTR(size, 0644); |
| 1557 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1558 | static struct attribute *veth_pool_attrs[] = { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1559 | &veth_active_attr, |
| 1560 | &veth_num_attr, |
| 1561 | &veth_size_attr, |
| 1562 | NULL, |
| 1563 | }; |
| 1564 | |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 1565 | static const struct sysfs_ops veth_pool_ops = { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1566 | .show = veth_pool_show, |
| 1567 | .store = veth_pool_store, |
| 1568 | }; |
| 1569 | |
| 1570 | static struct kobj_type ktype_veth_pool = { |
| 1571 | .release = NULL, |
| 1572 | .sysfs_ops = &veth_pool_ops, |
| 1573 | .default_attrs = veth_pool_attrs, |
| 1574 | }; |
| 1575 | |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 1576 | static int ibmveth_resume(struct device *dev) |
| 1577 | { |
| 1578 | struct net_device *netdev = dev_get_drvdata(dev); |
| 1579 | ibmveth_interrupt(netdev->irq, netdev); |
| 1580 | return 0; |
| 1581 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1582 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1583 | static struct vio_device_id ibmveth_device_table[] __devinitdata = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | { "network", "IBM,l-lan"}, |
Stephen Rothwell | fb120da | 2005-08-17 16:42:59 +1000 | [diff] [blame] | 1585 | { "", "" } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
| 1588 | |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 1589 | static struct dev_pm_ops ibmveth_pm_ops = { |
| 1590 | .resume = ibmveth_resume |
| 1591 | }; |
| 1592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | static struct vio_driver ibmveth_driver = { |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1594 | .id_table = ibmveth_device_table, |
| 1595 | .probe = ibmveth_probe, |
| 1596 | .remove = ibmveth_remove, |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1597 | .get_desired_dma = ibmveth_get_desired_dma, |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1598 | .driver = { |
| 1599 | .name = ibmveth_driver_name, |
Stephen Rothwell | 915124d | 2005-10-24 15:12:22 +1000 | [diff] [blame] | 1600 | .owner = THIS_MODULE, |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 1601 | .pm = &ibmveth_pm_ops, |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | }; |
| 1604 | |
| 1605 | static int __init ibmveth_module_init(void) |
| 1606 | { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1607 | printk(KERN_DEBUG "%s: %s %s\n", ibmveth_driver_name, |
| 1608 | ibmveth_driver_string, ibmveth_driver_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | return vio_register_driver(&ibmveth_driver); |
| 1611 | } |
| 1612 | |
| 1613 | static void __exit ibmveth_module_exit(void) |
| 1614 | { |
| 1615 | vio_unregister_driver(&ibmveth_driver); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1616 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | |
| 1618 | module_init(ibmveth_module_init); |
| 1619 | module_exit(ibmveth_module_exit); |