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 |
Jeff Kirsher | 0ab75ae | 2013-12-06 06:28:43 -0800 | [diff] [blame] | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 16 | * |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 17 | * Copyright (C) IBM Corporation, 2003, 2010 |
| 18 | * |
| 19 | * Authors: Dave Larson <larson1@us.ibm.com> |
| 20 | * Santiago Leon <santil@linux.vnet.ibm.com> |
| 21 | * Brian King <brking@linux.vnet.ibm.com> |
| 22 | * Robert Jennings <rcj@linux.vnet.ibm.com> |
| 23 | * Anton Blanchard <anton@au.ibm.com> |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 24 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 27 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/types.h> |
| 29 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/dma-mapping.h> |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/netdevice.h> |
| 33 | #include <linux/etherdevice.h> |
| 34 | #include <linux/skbuff.h> |
| 35 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 36 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/mm.h> |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 38 | #include <linux/pm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/ethtool.h> |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 40 | #include <linux/in.h> |
| 41 | #include <linux/ip.h> |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 42 | #include <linux/ipv6.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 43 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <asm/hvcall.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 45 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/vio.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 47 | #include <asm/iommu.h> |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 48 | #include <asm/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #include "ibmveth.h" |
| 51 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 52 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 53 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 54 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev); |
Santiago Leon | e295fe8 | 2010-09-03 18:29:08 +0000 | [diff] [blame] | 55 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 56 | static struct kobj_type ktype_veth_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | static const char ibmveth_driver_name[] = "ibmveth"; |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 60 | static const char ibmveth_driver_string[] = "IBM Power Virtual Ethernet Driver"; |
| 61 | #define ibmveth_driver_version "1.04" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Santiago Leon | 9d348af | 2010-09-03 18:29:53 +0000 | [diff] [blame] | 63 | MODULE_AUTHOR("Santiago Leon <santil@linux.vnet.ibm.com>"); |
| 64 | MODULE_DESCRIPTION("IBM Power Virtual Ethernet Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | MODULE_LICENSE("GPL"); |
| 66 | MODULE_VERSION(ibmveth_driver_version); |
| 67 | |
Santiago Leon | c08cc3c | 2010-09-03 18:28:20 +0000 | [diff] [blame] | 68 | static unsigned int tx_copybreak __read_mostly = 128; |
| 69 | module_param(tx_copybreak, uint, 0644); |
| 70 | MODULE_PARM_DESC(tx_copybreak, |
| 71 | "Maximum size of packet that is copied to a new buffer on transmit"); |
| 72 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 73 | static unsigned int rx_copybreak __read_mostly = 128; |
| 74 | module_param(rx_copybreak, uint, 0644); |
| 75 | MODULE_PARM_DESC(rx_copybreak, |
| 76 | "Maximum size of packet that is copied to a new buffer on receive"); |
| 77 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 78 | static unsigned int rx_flush __read_mostly = 0; |
| 79 | module_param(rx_flush, uint, 0644); |
| 80 | MODULE_PARM_DESC(rx_flush, "Flush receive buffers before use"); |
| 81 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 82 | struct ibmveth_stat { |
| 83 | char name[ETH_GSTRING_LEN]; |
| 84 | int offset; |
| 85 | }; |
| 86 | |
| 87 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) |
| 88 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) |
| 89 | |
| 90 | struct ibmveth_stat ibmveth_stats[] = { |
| 91 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, |
| 92 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 93 | { "replenish_add_buff_failure", |
| 94 | IBMVETH_STAT_OFF(replenish_add_buff_failure) }, |
| 95 | { "replenish_add_buff_success", |
| 96 | IBMVETH_STAT_OFF(replenish_add_buff_success) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 97 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, |
| 98 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 99 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
| 100 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 101 | { "fw_enabled_ipv4_csum", IBMVETH_STAT_OFF(fw_ipv4_csum_support) }, |
| 102 | { "fw_enabled_ipv6_csum", IBMVETH_STAT_OFF(fw_ipv6_csum_support) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 103 | }; |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | /* simple methods of getting data from the current rxq entry */ |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 106 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
| 107 | { |
Anton Blanchard | 0b536be | 2013-09-03 09:55:32 +1000 | [diff] [blame] | 108 | return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off); |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) |
| 112 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 113 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> |
| 114 | IBMVETH_RXQ_TOGGLE_SHIFT; |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 115 | } |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
| 118 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 119 | return ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) |
| 123 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 124 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) |
| 128 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 129 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) |
| 133 | { |
Anton Blanchard | 0b536be | 2013-09-03 09:55:32 +1000 | [diff] [blame] | 134 | return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | } |
| 136 | |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 137 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
| 138 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 139 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | /* setup the initial settings for a buffer pool */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 143 | static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, |
| 144 | u32 pool_index, u32 pool_size, |
| 145 | u32 buff_size, u32 pool_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | { |
| 147 | pool->size = pool_size; |
| 148 | pool->index = pool_index; |
| 149 | pool->buff_size = buff_size; |
Santiago Leon | c033a6d | 2010-09-03 18:28:09 +0000 | [diff] [blame] | 150 | pool->threshold = pool_size * 7 / 8; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 151 | pool->active = pool_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | /* allocate and setup an buffer pool - called during open */ |
| 155 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) |
| 156 | { |
| 157 | int i; |
| 158 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 159 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 161 | if (!pool->free_map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 164 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 165 | if (!pool->dma_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | kfree(pool->free_map); |
| 167 | pool->free_map = NULL; |
| 168 | return -1; |
| 169 | } |
| 170 | |
Julia Lawall | a05abcb | 2010-05-13 10:06:01 +0000 | [diff] [blame] | 171 | pool->skbuff = kcalloc(pool->size, sizeof(void *), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 173 | if (!pool->skbuff) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | kfree(pool->dma_addr); |
| 175 | pool->dma_addr = NULL; |
| 176 | |
| 177 | kfree(pool->free_map); |
| 178 | pool->free_map = NULL; |
| 179 | return -1; |
| 180 | } |
| 181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); |
| 183 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 184 | for (i = 0; i < pool->size; ++i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | pool->free_map[i] = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | atomic_set(&pool->available, 0); |
| 188 | pool->producer_index = 0; |
| 189 | pool->consumer_index = 0; |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 194 | static inline void ibmveth_flush_buffer(void *addr, unsigned long length) |
| 195 | { |
| 196 | unsigned long offset; |
| 197 | |
| 198 | for (offset = 0; offset < length; offset += SMP_CACHE_BYTES) |
| 199 | asm("dcbfl %0,%1" :: "b" (addr), "r" (offset)); |
| 200 | } |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* replenish the buffers for a pool. note that we don't need to |
| 203 | * skb_reserve these since they are used for incoming... |
| 204 | */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 205 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, |
| 206 | struct ibmveth_buff_pool *pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | { |
| 208 | u32 i; |
| 209 | u32 count = pool->size - atomic_read(&pool->available); |
| 210 | u32 buffers_added = 0; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 211 | struct sk_buff *skb; |
| 212 | unsigned int free_index, index; |
| 213 | u64 correlator; |
| 214 | unsigned long lpar_rc; |
| 215 | dma_addr_t dma_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | mb(); |
| 218 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 219 | for (i = 0; i < count; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | union ibmveth_buf_desc desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Santiago Leon | 003212c | 2010-09-03 18:29:03 +0000 | [diff] [blame] | 222 | skb = netdev_alloc_skb(adapter->netdev, pool->buff_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 224 | if (!skb) { |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 225 | netdev_dbg(adapter->netdev, |
| 226 | "replenish: unable to allocate skb\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | adapter->replenish_no_mem++; |
| 228 | break; |
| 229 | } |
| 230 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 231 | free_index = pool->consumer_index; |
Santiago Leon | a613f58 | 2010-09-03 18:28:04 +0000 | [diff] [blame] | 232 | pool->consumer_index++; |
| 233 | if (pool->consumer_index >= pool->size) |
| 234 | pool->consumer_index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | index = pool->free_map[free_index]; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 236 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 237 | BUG_ON(index == IBM_VETH_INVALID_MAP); |
| 238 | BUG_ON(pool->skbuff[index] != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
| 240 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
| 241 | pool->buff_size, DMA_FROM_DEVICE); |
| 242 | |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 243 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 244 | goto failure; |
| 245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
| 247 | pool->dma_addr[index] = dma_addr; |
| 248 | pool->skbuff[index] = skb; |
| 249 | |
| 250 | correlator = ((u64)pool->index << 32) | index; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 251 | *(u64 *)skb->data = correlator; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 253 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 254 | desc.fields.address = dma_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 256 | if (rx_flush) { |
| 257 | unsigned int len = min(pool->buff_size, |
| 258 | adapter->netdev->mtu + |
| 259 | IBMVETH_BUFF_OH); |
| 260 | ibmveth_flush_buffer(skb->data, len); |
| 261 | } |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 262 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, |
| 263 | desc.desc); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 264 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 265 | if (lpar_rc != H_SUCCESS) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 266 | goto failure; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 267 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | buffers_added++; |
| 269 | adapter->replenish_add_buff_success++; |
| 270 | } |
| 271 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | mb(); |
| 274 | atomic_add(buffers_added, &(pool->available)); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 275 | return; |
| 276 | |
| 277 | failure: |
| 278 | pool->free_map[free_index] = index; |
| 279 | pool->skbuff[index] = NULL; |
| 280 | if (pool->consumer_index == 0) |
| 281 | pool->consumer_index = pool->size - 1; |
| 282 | else |
| 283 | pool->consumer_index--; |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 284 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 285 | dma_unmap_single(&adapter->vdev->dev, |
| 286 | pool->dma_addr[index], pool->buff_size, |
| 287 | DMA_FROM_DEVICE); |
| 288 | dev_kfree_skb_any(skb); |
| 289 | adapter->replenish_add_buff_failure++; |
| 290 | |
| 291 | mb(); |
| 292 | atomic_add(buffers_added, &(pool->available)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | } |
| 294 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 295 | /* replenish routine */ |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 296 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 298 | int i; |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | adapter->replenish_task_cycles++; |
| 301 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 302 | for (i = (IBMVETH_NUM_BUFF_POOLS - 1); i >= 0; i--) { |
Santiago Leon | c033a6d | 2010-09-03 18:28:09 +0000 | [diff] [blame] | 303 | struct ibmveth_buff_pool *pool = &adapter->rx_buff_pool[i]; |
| 304 | |
| 305 | if (pool->active && |
| 306 | (atomic_read(&pool->available) < pool->threshold)) |
| 307 | ibmveth_replenish_buffer_pool(adapter, pool); |
| 308 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 310 | adapter->rx_no_buffer = *(u64 *)(((char*)adapter->buffer_list_addr) + |
| 311 | 4096 - 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | /* 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] | 315 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, |
| 316 | struct ibmveth_buff_pool *pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
| 318 | int i; |
| 319 | |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 320 | kfree(pool->free_map); |
| 321 | pool->free_map = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 323 | if (pool->skbuff && pool->dma_addr) { |
| 324 | for (i = 0; i < pool->size; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | struct sk_buff *skb = pool->skbuff[i]; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 326 | if (skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | dma_unmap_single(&adapter->vdev->dev, |
| 328 | pool->dma_addr[i], |
| 329 | pool->buff_size, |
| 330 | DMA_FROM_DEVICE); |
| 331 | dev_kfree_skb_any(skb); |
| 332 | pool->skbuff[i] = NULL; |
| 333 | } |
| 334 | } |
| 335 | } |
| 336 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 337 | if (pool->dma_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | kfree(pool->dma_addr); |
| 339 | pool->dma_addr = NULL; |
| 340 | } |
| 341 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 342 | if (pool->skbuff) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | kfree(pool->skbuff); |
| 344 | pool->skbuff = NULL; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | /* remove a buffer from a pool */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 349 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, |
| 350 | u64 correlator) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { |
| 352 | unsigned int pool = correlator >> 32; |
| 353 | unsigned int index = correlator & 0xffffffffUL; |
| 354 | unsigned int free_index; |
| 355 | struct sk_buff *skb; |
| 356 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 357 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
| 358 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
| 360 | skb = adapter->rx_buff_pool[pool].skbuff[index]; |
| 361 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 362 | BUG_ON(skb == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; |
| 365 | |
| 366 | dma_unmap_single(&adapter->vdev->dev, |
| 367 | adapter->rx_buff_pool[pool].dma_addr[index], |
| 368 | adapter->rx_buff_pool[pool].buff_size, |
| 369 | DMA_FROM_DEVICE); |
| 370 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 371 | free_index = adapter->rx_buff_pool[pool].producer_index; |
Santiago Leon | a613f58 | 2010-09-03 18:28:04 +0000 | [diff] [blame] | 372 | adapter->rx_buff_pool[pool].producer_index++; |
| 373 | if (adapter->rx_buff_pool[pool].producer_index >= |
| 374 | adapter->rx_buff_pool[pool].size) |
| 375 | adapter->rx_buff_pool[pool].producer_index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
| 377 | |
| 378 | mb(); |
| 379 | |
| 380 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); |
| 381 | } |
| 382 | |
| 383 | /* get the current buffer on the rx queue */ |
| 384 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) |
| 385 | { |
| 386 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; |
| 387 | unsigned int pool = correlator >> 32; |
| 388 | unsigned int index = correlator & 0xffffffffUL; |
| 389 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 390 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
| 391 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | return adapter->rx_buff_pool[pool].skbuff[index]; |
| 394 | } |
| 395 | |
| 396 | /* recycle the current buffer on the rx queue */ |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 397 | static int ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
| 399 | u32 q_index = adapter->rx_queue.index; |
| 400 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; |
| 401 | unsigned int pool = correlator >> 32; |
| 402 | unsigned int index = correlator & 0xffffffffUL; |
| 403 | union ibmveth_buf_desc desc; |
| 404 | unsigned long lpar_rc; |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 405 | int ret = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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]); |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 413 | goto out; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 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); |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 426 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | } |
| 428 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 429 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | adapter->rx_queue.index = 0; |
| 431 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 432 | } |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 433 | |
| 434 | out: |
| 435 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
| 437 | |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 438 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
| 440 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
| 441 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 442 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | adapter->rx_queue.index = 0; |
| 444 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) |
| 449 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 450 | int i; |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 451 | struct device *dev = &adapter->vdev->dev; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 452 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 453 | if (adapter->buffer_list_addr != NULL) { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 454 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
| 455 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | DMA_BIDIRECTIONAL); |
| 457 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 458 | } |
| 459 | free_page((unsigned long)adapter->buffer_list_addr); |
| 460 | adapter->buffer_list_addr = NULL; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 461 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 463 | if (adapter->filter_list_addr != NULL) { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 464 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
| 465 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | DMA_BIDIRECTIONAL); |
| 467 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 468 | } |
| 469 | free_page((unsigned long)adapter->filter_list_addr); |
| 470 | adapter->filter_list_addr = NULL; |
| 471 | } |
| 472 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 473 | if (adapter->rx_queue.queue_addr != NULL) { |
Santiago Leon | d90c92f | 2012-09-04 14:41:37 +0000 | [diff] [blame] | 474 | dma_free_coherent(dev, adapter->rx_queue.queue_len, |
| 475 | adapter->rx_queue.queue_addr, |
| 476 | adapter->rx_queue.queue_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | adapter->rx_queue.queue_addr = NULL; |
| 478 | } |
| 479 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 480 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 481 | if (adapter->rx_buff_pool[i].active) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 482 | ibmveth_free_buffer_pool(adapter, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 483 | &adapter->rx_buff_pool[i]); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 484 | |
| 485 | if (adapter->bounce_buffer != NULL) { |
Stephen Rothwell | c713e7c | 2008-07-28 02:14:24 +1000 | [diff] [blame] | 486 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 487 | dma_unmap_single(&adapter->vdev->dev, |
| 488 | adapter->bounce_buffer_dma, |
| 489 | adapter->netdev->mtu + IBMVETH_BUFF_OH, |
| 490 | DMA_BIDIRECTIONAL); |
| 491 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; |
| 492 | } |
| 493 | kfree(adapter->bounce_buffer); |
| 494 | adapter->bounce_buffer = NULL; |
| 495 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | } |
| 497 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 498 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
| 499 | union ibmveth_buf_desc rxq_desc, u64 mac_address) |
| 500 | { |
| 501 | int rc, try_again = 1; |
| 502 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 503 | /* |
| 504 | * After a kexec the adapter will still be open, so our attempt to |
| 505 | * open it will fail. So if we get a failure we free the adapter and |
| 506 | * try again, but only once. |
| 507 | */ |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 508 | retry: |
| 509 | rc = h_register_logical_lan(adapter->vdev->unit_address, |
| 510 | adapter->buffer_list_dma, rxq_desc.desc, |
| 511 | adapter->filter_list_dma, mac_address); |
| 512 | |
| 513 | if (rc != H_SUCCESS && try_again) { |
| 514 | do { |
| 515 | rc = h_free_logical_lan(adapter->vdev->unit_address); |
| 516 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
| 517 | |
| 518 | try_again = 0; |
| 519 | goto retry; |
| 520 | } |
| 521 | |
| 522 | return rc; |
| 523 | } |
| 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | static int ibmveth_open(struct net_device *netdev) |
| 526 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 527 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | u64 mac_address = 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 529 | int rxq_entries = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | unsigned long lpar_rc; |
| 531 | int rc; |
| 532 | union ibmveth_buf_desc rxq_desc; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 533 | int i; |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 534 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 536 | netdev_dbg(netdev, "open starting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 538 | napi_enable(&adapter->napi); |
| 539 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 540 | for(i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 541 | rxq_entries += adapter->rx_buff_pool[i].size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
| 544 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 545 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 546 | if (!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 547 | netdev_err(netdev, "unable to allocate filter or buffer list " |
| 548 | "pages\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 549 | rc = -ENOMEM; |
| 550 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
| 552 | |
Santiago Leon | d90c92f | 2012-09-04 14:41:37 +0000 | [diff] [blame] | 553 | dev = &adapter->vdev->dev; |
| 554 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 555 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * |
| 556 | rxq_entries; |
Santiago Leon | d90c92f | 2012-09-04 14:41:37 +0000 | [diff] [blame] | 557 | adapter->rx_queue.queue_addr = |
Joe Perches | d0320f7 | 2013-03-14 13:07:21 +0000 | [diff] [blame] | 558 | dma_alloc_coherent(dev, adapter->rx_queue.queue_len, |
| 559 | &adapter->rx_queue.queue_dma, GFP_KERNEL); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 560 | if (!adapter->rx_queue.queue_addr) { |
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 | adapter->buffer_list_dma = dma_map_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 567 | adapter->filter_list_dma = dma_map_single(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 570 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
Santiago Leon | d90c92f | 2012-09-04 14:41:37 +0000 | [diff] [blame] | 571 | (dma_mapping_error(dev, adapter->filter_list_dma))) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 572 | netdev_err(netdev, "unable to map filter or buffer list " |
| 573 | "pages\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 574 | rc = -ENOMEM; |
| 575 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | adapter->rx_queue.index = 0; |
| 579 | adapter->rx_queue.num_slots = rxq_entries; |
| 580 | adapter->rx_queue.toggle = 1; |
| 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
| 583 | mac_address = mac_address >> 16; |
| 584 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 585 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | |
| 586 | adapter->rx_queue.queue_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
| 588 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 589 | netdev_dbg(netdev, "buffer list @ 0x%p\n", adapter->buffer_list_addr); |
| 590 | netdev_dbg(netdev, "filter list @ 0x%p\n", adapter->filter_list_addr); |
| 591 | 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] | 592 | |
Santiago Leon | 4347ef1 | 2006-10-03 12:24:34 -0500 | [diff] [blame] | 593 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
| 594 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 595 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 597 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 598 | netdev_err(netdev, "h_register_logical_lan failed with %ld\n", |
| 599 | lpar_rc); |
| 600 | netdev_err(netdev, "buffer TCE:0x%llx filter TCE:0x%llx rxq " |
| 601 | "desc:0x%llx MAC:0x%llx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | adapter->buffer_list_dma, |
| 603 | adapter->filter_list_dma, |
| 604 | rxq_desc.desc, |
| 605 | mac_address); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 606 | rc = -ENONET; |
| 607 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |
| 609 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 610 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
| 611 | if (!adapter->rx_buff_pool[i].active) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 612 | continue; |
| 613 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 614 | netdev_err(netdev, "unable to alloc pool\n"); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 615 | adapter->rx_buff_pool[i].active = 0; |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 616 | rc = -ENOMEM; |
| 617 | goto err_out; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 618 | } |
| 619 | } |
| 620 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 621 | netdev_dbg(netdev, "registering irq 0x%x\n", netdev->irq); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 622 | rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, |
| 623 | netdev); |
| 624 | if (rc != 0) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 625 | netdev_err(netdev, "unable to request irq 0x%x, rc %d\n", |
| 626 | netdev->irq, rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | do { |
David S. Miller | 88c5100 | 2011-10-07 13:38:43 -0400 | [diff] [blame] | 628 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); |
| 629 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 631 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | } |
| 633 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 634 | adapter->bounce_buffer = |
| 635 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); |
| 636 | if (!adapter->bounce_buffer) { |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 637 | rc = -ENOMEM; |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 638 | goto err_out_free_irq; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 639 | } |
| 640 | adapter->bounce_buffer_dma = |
| 641 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, |
| 642 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 643 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 644 | netdev_err(netdev, "unable to map bounce buffer\n"); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 645 | rc = -ENOMEM; |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 646 | goto err_out_free_irq; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 647 | } |
| 648 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 649 | netdev_dbg(netdev, "initial replenish cycle\n"); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 650 | ibmveth_interrupt(netdev->irq, netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 652 | netif_start_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 654 | netdev_dbg(netdev, "open complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
| 656 | return 0; |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 657 | |
Denis Kirjanov | e0e8ab5 | 2010-10-20 04:21:51 +0000 | [diff] [blame] | 658 | err_out_free_irq: |
| 659 | free_irq(netdev->irq, netdev); |
Denis Kirjanov | 88426f2 | 2010-10-20 04:21:13 +0000 | [diff] [blame] | 660 | err_out: |
| 661 | ibmveth_cleanup(adapter); |
| 662 | napi_disable(&adapter->napi); |
| 663 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | static int ibmveth_close(struct net_device *netdev) |
| 667 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 668 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | long lpar_rc; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 670 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 671 | netdev_dbg(netdev, "close starting\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 673 | napi_disable(&adapter->napi); |
| 674 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 675 | if (!adapter->pool_config) |
| 676 | netif_stop_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
Robert Jennings | ee2e611 | 2010-07-16 04:57:25 +0000 | [diff] [blame] | 678 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | do { |
| 681 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 682 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 684 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 685 | netdev_err(netdev, "h_free_logical_lan failed with %lx, " |
| 686 | "continuing with close\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | } |
| 688 | |
Robert Jennings | ee2e611 | 2010-07-16 04:57:25 +0000 | [diff] [blame] | 689 | free_irq(netdev->irq, netdev); |
| 690 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 691 | adapter->rx_no_buffer = *(u64 *)(((char *)adapter->buffer_list_addr) + |
| 692 | 4096 - 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
| 694 | ibmveth_cleanup(adapter); |
| 695 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 696 | netdev_dbg(netdev, "close complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
| 698 | return 0; |
| 699 | } |
| 700 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 701 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 702 | { |
| 703 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | |
| 704 | SUPPORTED_FIBRE); |
| 705 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
| 706 | ADVERTISED_FIBRE); |
David Decotigny | 7073949 | 2011-04-27 18:32:40 +0000 | [diff] [blame] | 707 | ethtool_cmd_speed_set(cmd, SPEED_1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | cmd->duplex = DUPLEX_FULL; |
| 709 | cmd->port = PORT_FIBRE; |
| 710 | cmd->phy_address = 0; |
| 711 | cmd->transceiver = XCVR_INTERNAL; |
| 712 | cmd->autoneg = AUTONEG_ENABLE; |
| 713 | cmd->maxtxpkt = 0; |
| 714 | cmd->maxrxpkt = 1; |
| 715 | return 0; |
| 716 | } |
| 717 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 718 | static void netdev_get_drvinfo(struct net_device *dev, |
| 719 | struct ethtool_drvinfo *info) |
| 720 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 721 | strlcpy(info->driver, ibmveth_driver_name, sizeof(info->driver)); |
| 722 | strlcpy(info->version, ibmveth_driver_version, sizeof(info->version)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } |
| 724 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 725 | static netdev_features_t ibmveth_fix_features(struct net_device *dev, |
| 726 | netdev_features_t features) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 727 | { |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 728 | /* |
| 729 | * Since the ibmveth firmware interface does not have the |
| 730 | * concept of separate tx/rx checksum offload enable, if rx |
| 731 | * checksum is disabled we also have to disable tx checksum |
| 732 | * offload. Once we disable rx checksum offload, we are no |
| 733 | * longer allowed to send tx buffers that are not properly |
| 734 | * checksummed. |
| 735 | */ |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 736 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 737 | if (!(features & NETIF_F_RXCSUM)) |
| 738 | features &= ~NETIF_F_ALL_CSUM; |
| 739 | |
| 740 | return features; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 741 | } |
| 742 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 743 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 744 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 745 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Stephen Rothwell | ff5bfc3 | 2009-01-06 10:47:44 -0800 | [diff] [blame] | 746 | unsigned long set_attr, clr_attr, ret_attr; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 747 | unsigned long set_attr6, clr_attr6; |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 748 | long ret, ret4, ret6; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 749 | int rc1 = 0, rc2 = 0; |
| 750 | int restart = 0; |
| 751 | |
| 752 | if (netif_running(dev)) { |
| 753 | restart = 1; |
| 754 | adapter->pool_config = 1; |
| 755 | ibmveth_close(dev); |
| 756 | adapter->pool_config = 0; |
| 757 | } |
| 758 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 759 | set_attr = 0; |
| 760 | clr_attr = 0; |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 761 | set_attr6 = 0; |
| 762 | clr_attr6 = 0; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 763 | |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 764 | if (data) { |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 765 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 766 | set_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
| 767 | } else { |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 768 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 769 | clr_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
| 770 | } |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 771 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 772 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 773 | |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 774 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
| 775 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && |
| 776 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 777 | ret4 = h_illan_attributes(adapter->vdev->unit_address, clr_attr, |
Brian King | 79ef4a4 | 2007-08-17 09:16:56 -0500 | [diff] [blame] | 778 | set_attr, &ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 779 | |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 780 | if (ret4 != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 781 | netdev_err(dev, "unable to change IPv4 checksum " |
| 782 | "offload settings. %d rc=%ld\n", |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 783 | data, ret4); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 784 | |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 785 | h_illan_attributes(adapter->vdev->unit_address, |
| 786 | set_attr, clr_attr, &ret_attr); |
| 787 | |
| 788 | if (data == 1) |
| 789 | dev->features &= ~NETIF_F_IP_CSUM; |
| 790 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 791 | } else { |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 792 | adapter->fw_ipv4_csum_support = data; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 793 | } |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 794 | |
| 795 | ret6 = h_illan_attributes(adapter->vdev->unit_address, |
| 796 | clr_attr6, set_attr6, &ret_attr); |
| 797 | |
| 798 | if (ret6 != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 799 | netdev_err(dev, "unable to change IPv6 checksum " |
| 800 | "offload settings. %d rc=%ld\n", |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 801 | data, ret6); |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 802 | |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 803 | h_illan_attributes(adapter->vdev->unit_address, |
| 804 | set_attr6, clr_attr6, &ret_attr); |
| 805 | |
| 806 | if (data == 1) |
| 807 | dev->features &= ~NETIF_F_IPV6_CSUM; |
| 808 | |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 809 | } else |
| 810 | adapter->fw_ipv6_csum_support = data; |
| 811 | |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 812 | if (ret4 == H_SUCCESS || ret6 == H_SUCCESS) |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 813 | adapter->rx_csum = data; |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 814 | else |
| 815 | rc1 = -EIO; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 816 | } else { |
| 817 | rc1 = -EIO; |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 818 | netdev_err(dev, "unable to change checksum offload settings." |
| 819 | " %d rc=%ld ret_attr=%lx\n", data, ret, |
| 820 | ret_attr); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | if (restart) |
| 824 | rc2 = ibmveth_open(dev); |
| 825 | |
| 826 | return rc1 ? rc1 : rc2; |
| 827 | } |
| 828 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 829 | static int ibmveth_set_features(struct net_device *dev, |
| 830 | netdev_features_t features) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 831 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 832 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 833 | int rx_csum = !!(features & NETIF_F_RXCSUM); |
| 834 | int rc; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 835 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 836 | if (rx_csum == adapter->rx_csum) |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 837 | return 0; |
| 838 | |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 839 | rc = ibmveth_set_csum_offload(dev, rx_csum); |
| 840 | if (rc && !adapter->rx_csum) |
| 841 | dev->features = features & ~(NETIF_F_ALL_CSUM | NETIF_F_RXCSUM); |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 842 | |
| 843 | return rc; |
| 844 | } |
| 845 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 846 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
| 847 | { |
| 848 | int i; |
| 849 | |
| 850 | if (stringset != ETH_SS_STATS) |
| 851 | return; |
| 852 | |
| 853 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) |
| 854 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); |
| 855 | } |
| 856 | |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 857 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 858 | { |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 859 | switch (sset) { |
| 860 | case ETH_SS_STATS: |
| 861 | return ARRAY_SIZE(ibmveth_stats); |
| 862 | default: |
| 863 | return -EOPNOTSUPP; |
| 864 | } |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | static void ibmveth_get_ethtool_stats(struct net_device *dev, |
| 868 | struct ethtool_stats *stats, u64 *data) |
| 869 | { |
| 870 | int i; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 871 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 872 | |
| 873 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) |
| 874 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); |
| 875 | } |
| 876 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 877 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | .get_drvinfo = netdev_get_drvinfo, |
| 879 | .get_settings = netdev_get_settings, |
Ben Hutchings | ed4ba4b | 2010-12-09 12:10:25 +0000 | [diff] [blame] | 880 | .get_link = ethtool_op_get_link, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 881 | .get_strings = ibmveth_get_strings, |
Jeff Garzik | b9f2c04 | 2007-10-03 18:07:32 -0700 | [diff] [blame] | 882 | .get_sset_count = ibmveth_get_sset_count, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 883 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | }; |
| 885 | |
| 886 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 887 | { |
| 888 | return -EOPNOTSUPP; |
| 889 | } |
| 890 | |
| 891 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) |
| 892 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 893 | static int ibmveth_send(struct ibmveth_adapter *adapter, |
| 894 | union ibmveth_buf_desc *descs) |
| 895 | { |
| 896 | unsigned long correlator; |
| 897 | unsigned int retry_count; |
| 898 | unsigned long ret; |
| 899 | |
| 900 | /* |
| 901 | * The retry count sets a maximum for the number of broadcast and |
| 902 | * multicast destinations within the system. |
| 903 | */ |
| 904 | retry_count = 1024; |
| 905 | correlator = 0; |
| 906 | do { |
| 907 | ret = h_send_logical_lan(adapter->vdev->unit_address, |
| 908 | descs[0].desc, descs[1].desc, |
| 909 | descs[2].desc, descs[3].desc, |
| 910 | descs[4].desc, descs[5].desc, |
| 911 | correlator, &correlator); |
| 912 | } while ((ret == H_BUSY) && (retry_count--)); |
| 913 | |
| 914 | if (ret != H_SUCCESS && ret != H_DROPPED) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 915 | netdev_err(adapter->netdev, "tx: h_send_logical_lan failed " |
| 916 | "with rc=%ld\n", ret); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 917 | return 1; |
| 918 | } |
| 919 | |
| 920 | return 0; |
| 921 | } |
| 922 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 923 | static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, |
| 924 | struct net_device *netdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 926 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 927 | unsigned int desc_flags; |
| 928 | union ibmveth_buf_desc descs[6]; |
| 929 | int last, i; |
| 930 | int force_bounce = 0; |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 931 | dma_addr_t dma_addr; |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 932 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 933 | /* |
| 934 | * veth handles a maximum of 6 segments including the header, so |
| 935 | * we have to linearize the skb if there are more than this. |
| 936 | */ |
| 937 | if (skb_shinfo(skb)->nr_frags > 5 && __skb_linearize(skb)) { |
| 938 | netdev->stats.tx_dropped++; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 939 | goto out; |
| 940 | } |
| 941 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 942 | /* veth can't checksum offload UDP */ |
| 943 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
Santiago Leon | ab78df7 | 2010-09-03 18:28:52 +0000 | [diff] [blame] | 944 | ((skb->protocol == htons(ETH_P_IP) && |
| 945 | ip_hdr(skb)->protocol != IPPROTO_TCP) || |
| 946 | (skb->protocol == htons(ETH_P_IPV6) && |
| 947 | ipv6_hdr(skb)->nexthdr != IPPROTO_TCP)) && |
| 948 | skb_checksum_help(skb)) { |
| 949 | |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 950 | netdev_err(netdev, "tx: failed to checksum packet\n"); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 951 | netdev->stats.tx_dropped++; |
| 952 | goto out; |
| 953 | } |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 954 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 955 | desc_flags = IBMVETH_BUF_VALID; |
| 956 | |
| 957 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| 958 | unsigned char *buf = skb_transport_header(skb) + |
| 959 | skb->csum_offset; |
| 960 | |
| 961 | desc_flags |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 962 | |
| 963 | /* Need to zero out the checksum */ |
| 964 | buf[0] = 0; |
| 965 | buf[1] = 0; |
| 966 | } |
| 967 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 968 | retry_bounce: |
| 969 | memset(descs, 0, sizeof(descs)); |
Santiago Leon | c08cc3c | 2010-09-03 18:28:20 +0000 | [diff] [blame] | 970 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 971 | /* |
| 972 | * If a linear packet is below the rx threshold then |
| 973 | * copy it into the static bounce buffer. This avoids the |
| 974 | * cost of a TCE insert and remove. |
| 975 | */ |
| 976 | if (force_bounce || (!skb_is_nonlinear(skb) && |
| 977 | (skb->len < tx_copybreak))) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 978 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, |
| 979 | skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 981 | descs[0].fields.flags_len = desc_flags | skb->len; |
| 982 | descs[0].fields.address = adapter->bounce_buffer_dma; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 983 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 984 | if (ibmveth_send(adapter, descs)) { |
| 985 | adapter->tx_send_failed++; |
| 986 | netdev->stats.tx_dropped++; |
| 987 | } else { |
| 988 | netdev->stats.tx_packets++; |
| 989 | netdev->stats.tx_bytes += skb->len; |
| 990 | } |
| 991 | |
| 992 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 995 | /* Map the header */ |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 996 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
| 997 | skb_headlen(skb), DMA_TO_DEVICE); |
| 998 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 999 | goto map_failed; |
| 1000 | |
| 1001 | descs[0].fields.flags_len = desc_flags | skb_headlen(skb); |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 1002 | descs[0].fields.address = dma_addr; |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1003 | |
| 1004 | /* Map the frags */ |
| 1005 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 1006 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1007 | |
Ian Campbell | 8838a53 | 2011-08-31 00:46:53 +0000 | [diff] [blame] | 1008 | dma_addr = skb_frag_dma_map(&adapter->vdev->dev, frag, 0, |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 1009 | skb_frag_size(frag), DMA_TO_DEVICE); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1010 | |
| 1011 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
| 1012 | goto map_failed_frags; |
| 1013 | |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 1014 | descs[i+1].fields.flags_len = desc_flags | skb_frag_size(frag); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1015 | descs[i+1].fields.address = dma_addr; |
| 1016 | } |
| 1017 | |
| 1018 | if (ibmveth_send(adapter, descs)) { |
| 1019 | adapter->tx_send_failed++; |
| 1020 | netdev->stats.tx_dropped++; |
| 1021 | } else { |
| 1022 | netdev->stats.tx_packets++; |
| 1023 | netdev->stats.tx_bytes += skb->len; |
| 1024 | } |
| 1025 | |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 1026 | dma_unmap_single(&adapter->vdev->dev, |
| 1027 | descs[0].fields.address, |
| 1028 | descs[0].fields.flags_len & IBMVETH_BUF_LEN_MASK, |
| 1029 | DMA_TO_DEVICE); |
| 1030 | |
| 1031 | for (i = 1; i < skb_shinfo(skb)->nr_frags + 1; i++) |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1032 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, |
| 1033 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, |
| 1034 | DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | |
Santiago Leon | e8cb7eb | 2010-09-03 18:28:15 +0000 | [diff] [blame] | 1036 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1038 | return NETDEV_TX_OK; |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1039 | |
| 1040 | map_failed_frags: |
| 1041 | last = i+1; |
| 1042 | for (i = 0; i < last; i++) |
| 1043 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, |
| 1044 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, |
| 1045 | DMA_TO_DEVICE); |
| 1046 | |
| 1047 | map_failed: |
| 1048 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1049 | netdev_err(netdev, "tx: unable to map xmit buffer\n"); |
Santiago Leon | 6e8ab30 | 2010-09-03 18:28:36 +0000 | [diff] [blame] | 1050 | adapter->tx_map_failed++; |
| 1051 | skb_linearize(skb); |
| 1052 | force_bounce = 1; |
| 1053 | goto retry_bounce; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | } |
| 1055 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1056 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1058 | struct ibmveth_adapter *adapter = |
| 1059 | container_of(napi, struct ibmveth_adapter, napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1060 | struct net_device *netdev = adapter->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | int frames_processed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | unsigned long lpar_rc; |
| 1063 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1064 | restart_poll: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | do { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1066 | if (!ibmveth_rxq_pending_buffer(adapter)) |
| 1067 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | |
Anton Blanchard | f89e49e | 2010-09-06 18:21:41 -0700 | [diff] [blame] | 1069 | smp_rmb(); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1070 | if (!ibmveth_rxq_buffer_valid(adapter)) { |
| 1071 | wmb(); /* suggested by larson1 */ |
| 1072 | adapter->rx_invalid_buffer++; |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1073 | netdev_dbg(netdev, "recycling invalid buffer\n"); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1074 | ibmveth_rxq_recycle_buffer(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | } else { |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1076 | struct sk_buff *skb, *new_skb; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1077 | int length = ibmveth_rxq_frame_length(adapter); |
| 1078 | int offset = ibmveth_rxq_frame_offset(adapter); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1079 | int csum_good = ibmveth_rxq_csum_good(adapter); |
| 1080 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1081 | skb = ibmveth_rxq_get_buffer(adapter); |
| 1082 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1083 | new_skb = NULL; |
| 1084 | if (length < rx_copybreak) |
| 1085 | new_skb = netdev_alloc_skb(netdev, length); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1086 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1087 | if (new_skb) { |
| 1088 | skb_copy_to_linear_data(new_skb, |
| 1089 | skb->data + offset, |
| 1090 | length); |
Santiago Leon | 0c26b67 | 2010-09-03 18:28:41 +0000 | [diff] [blame] | 1091 | if (rx_flush) |
| 1092 | ibmveth_flush_buffer(skb->data, |
| 1093 | length + offset); |
David S. Miller | 8decf86 | 2011-09-22 03:23:13 -0400 | [diff] [blame] | 1094 | if (!ibmveth_rxq_recycle_buffer(adapter)) |
| 1095 | kfree_skb(skb); |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1096 | skb = new_skb; |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1097 | } else { |
| 1098 | ibmveth_rxq_harvest_buffer(adapter); |
| 1099 | skb_reserve(skb, offset); |
| 1100 | } |
| 1101 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1102 | skb_put(skb, length); |
| 1103 | skb->protocol = eth_type_trans(skb, netdev); |
| 1104 | |
Santiago Leon | 8d86c61 | 2010-09-03 18:28:25 +0000 | [diff] [blame] | 1105 | if (csum_good) |
| 1106 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1107 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1108 | netif_receive_skb(skb); /* send it up */ |
| 1109 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1110 | netdev->stats.rx_packets++; |
| 1111 | netdev->stats.rx_bytes += length; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1112 | frames_processed++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1114 | } while (frames_processed < budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 1116 | ibmveth_replenish_task(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1118 | if (frames_processed < budget) { |
| 1119 | /* We think we are done - reenable interrupts, |
| 1120 | * then check once more to make sure we are done. |
| 1121 | */ |
| 1122 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1123 | VIO_IRQ_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 1125 | BUG_ON(lpar_rc != H_SUCCESS); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1126 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1127 | napi_complete(napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1128 | |
| 1129 | if (ibmveth_rxq_pending_buffer(adapter) && |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1130 | napi_reschedule(napi)) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1131 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1132 | VIO_IRQ_DISABLE); |
| 1133 | goto restart_poll; |
| 1134 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | } |
| 1136 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1137 | return frames_processed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | } |
| 1139 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1140 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1141 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | struct net_device *netdev = dev_instance; |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1143 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | unsigned long lpar_rc; |
| 1145 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1146 | if (napi_schedule_prep(&adapter->napi)) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1147 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 1148 | VIO_IRQ_DISABLE); |
Santiago Leon | 6485911 | 2010-09-03 18:29:41 +0000 | [diff] [blame] | 1149 | BUG_ON(lpar_rc != H_SUCCESS); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1150 | __napi_schedule(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | } |
| 1152 | return IRQ_HANDLED; |
| 1153 | } |
| 1154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
| 1156 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1157 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | unsigned long lpar_rc; |
| 1159 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1160 | if ((netdev->flags & IFF_PROMISC) || |
| 1161 | (netdev_mc_count(netdev) > adapter->mcastFilterSize)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1163 | IbmVethMcastEnableRecv | |
| 1164 | IbmVethMcastDisableFiltering, |
| 1165 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1166 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1167 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1168 | "entering promisc mode\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | } |
| 1170 | } else { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1171 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | /* clear the filter table & disable filtering */ |
| 1173 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1174 | IbmVethMcastEnableRecv | |
| 1175 | IbmVethMcastDisableFiltering | |
| 1176 | IbmVethMcastClearFilterTable, |
| 1177 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1178 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1179 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1180 | "attempting to clear filter table\n", |
| 1181 | lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | } |
| 1183 | /* add the addresses to the filter table */ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1184 | netdev_for_each_mc_addr(ha, netdev) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1185 | /* add the multicast address to the filter table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | unsigned long mcast_addr = 0; |
Joe Perches | d458cdf | 2013-10-01 19:04:40 -0700 | [diff] [blame] | 1187 | memcpy(((char *)&mcast_addr)+2, ha->addr, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1189 | IbmVethMcastAddFilter, |
| 1190 | mcast_addr); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1191 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1192 | netdev_err(netdev, "h_multicast_ctrl rc=%ld " |
| 1193 | "when adding an entry to the filter " |
| 1194 | "table\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | } |
| 1196 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | /* re-enable filtering */ |
| 1199 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1200 | IbmVethMcastEnableFiltering, |
| 1201 | 0); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1202 | if (lpar_rc != H_SUCCESS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1203 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
| 1204 | "enabling filtering\n", lpar_rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } |
| 1206 | } |
| 1207 | } |
| 1208 | |
| 1209 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) |
| 1210 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1211 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1212 | struct vio_dev *viodev = adapter->vdev; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1213 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1214 | int i, rc; |
| 1215 | int need_restart = 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1216 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1217 | if (new_mtu < IBMVETH_MIN_MTU) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | return -EINVAL; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1219 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1220 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1221 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) |
| 1222 | break; |
| 1223 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1224 | if (i == IBMVETH_NUM_BUFF_POOLS) |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1225 | return -EINVAL; |
| 1226 | |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1227 | /* Deactivate all the buffer pools so that the next loop can activate |
| 1228 | only the buffer pools necessary to hold the new MTU */ |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1229 | if (netif_running(adapter->netdev)) { |
| 1230 | need_restart = 1; |
| 1231 | adapter->pool_config = 1; |
| 1232 | ibmveth_close(adapter->netdev); |
| 1233 | adapter->pool_config = 0; |
| 1234 | } |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1235 | |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1236 | /* Look for an active buffer pool that can hold the new MTU */ |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1237 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1238 | adapter->rx_buff_pool[i].active = 1; |
| 1239 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1240 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1241 | dev->mtu = new_mtu; |
| 1242 | vio_cmo_set_dev_desired(viodev, |
| 1243 | ibmveth_get_desired_dma |
| 1244 | (viodev)); |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1245 | if (need_restart) { |
| 1246 | return ibmveth_open(adapter->netdev); |
| 1247 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1248 | return 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1249 | } |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1250 | } |
Robert Jennings | 0645bab | 2010-08-17 09:15:45 +0000 | [diff] [blame] | 1251 | |
| 1252 | if (need_restart && (rc = ibmveth_open(adapter->netdev))) |
| 1253 | return rc; |
| 1254 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1255 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | } |
| 1257 | |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1258 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1259 | static void ibmveth_poll_controller(struct net_device *dev) |
| 1260 | { |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1261 | ibmveth_replenish_task(netdev_priv(dev)); |
Andrew Morton | 5f77113 | 2006-10-10 14:33:30 -0700 | [diff] [blame] | 1262 | ibmveth_interrupt(dev->irq, dev); |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1263 | } |
| 1264 | #endif |
| 1265 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1266 | /** |
| 1267 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver |
| 1268 | * |
| 1269 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned |
| 1270 | * |
| 1271 | * Return value: |
| 1272 | * Number of bytes of IO data the driver will need to perform well. |
| 1273 | */ |
| 1274 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) |
| 1275 | { |
| 1276 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); |
| 1277 | struct ibmveth_adapter *adapter; |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1278 | struct iommu_table *tbl; |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1279 | unsigned long ret; |
| 1280 | int i; |
| 1281 | int rxqentries = 1; |
| 1282 | |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1283 | tbl = get_iommu_table_base(&vdev->dev); |
| 1284 | |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1285 | /* netdev inits at probe time along with the structures we need below*/ |
| 1286 | if (netdev == NULL) |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1287 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT, tbl); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1288 | |
| 1289 | adapter = netdev_priv(netdev); |
| 1290 | |
| 1291 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1292 | ret += IOMMU_PAGE_ALIGN(netdev->mtu, tbl); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1293 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1294 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1295 | /* add the size of the active receive buffers */ |
| 1296 | if (adapter->rx_buff_pool[i].active) |
| 1297 | ret += |
| 1298 | adapter->rx_buff_pool[i].size * |
| 1299 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1300 | buff_size, tbl); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1301 | rxqentries += adapter->rx_buff_pool[i].size; |
| 1302 | } |
| 1303 | /* add the size of the receive queue entries */ |
Alistair Popple | d084775 | 2013-12-09 18:17:03 +1100 | [diff] [blame] | 1304 | ret += IOMMU_PAGE_ALIGN( |
| 1305 | rxqentries * sizeof(struct ibmveth_rx_q_entry), tbl); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1306 | |
| 1307 | return ret; |
| 1308 | } |
| 1309 | |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1310 | static const struct net_device_ops ibmveth_netdev_ops = { |
| 1311 | .ndo_open = ibmveth_open, |
| 1312 | .ndo_stop = ibmveth_close, |
| 1313 | .ndo_start_xmit = ibmveth_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1314 | .ndo_set_rx_mode = ibmveth_set_multicast_list, |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1315 | .ndo_do_ioctl = ibmveth_ioctl, |
| 1316 | .ndo_change_mtu = ibmveth_change_mtu, |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 1317 | .ndo_fix_features = ibmveth_fix_features, |
| 1318 | .ndo_set_features = ibmveth_set_features, |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1319 | .ndo_validate_addr = eth_validate_addr, |
| 1320 | .ndo_set_mac_address = eth_mac_addr, |
| 1321 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1322 | .ndo_poll_controller = ibmveth_poll_controller, |
| 1323 | #endif |
| 1324 | }; |
| 1325 | |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 1326 | static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | { |
Benjamin Herrenschmidt | 13f8520 | 2013-05-03 17:19:01 +0000 | [diff] [blame] | 1328 | int rc, i, mac_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | struct net_device *netdev; |
Mariusz Kozlowski | 9dc83af | 2007-08-06 23:44:03 +0200 | [diff] [blame] | 1330 | struct ibmveth_adapter *adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | unsigned char *mac_addr_p; |
| 1332 | unsigned int *mcastFilterSize_p; |
| 1333 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1334 | dev_dbg(&dev->dev, "entering ibmveth_probe for UA 0x%x\n", |
| 1335 | dev->unit_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1337 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, VETH_MAC_ADDR, |
Benjamin Herrenschmidt | 13f8520 | 2013-05-03 17:19:01 +0000 | [diff] [blame] | 1338 | &mac_len); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1339 | if (!mac_addr_p) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1340 | dev_err(&dev->dev, "Can't find VETH_MAC_ADDR attribute\n"); |
Santiago Leon | be35ae9 | 2010-09-03 18:29:36 +0000 | [diff] [blame] | 1341 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } |
Benjamin Herrenschmidt | 13f8520 | 2013-05-03 17:19:01 +0000 | [diff] [blame] | 1343 | /* Workaround for old/broken pHyp */ |
| 1344 | if (mac_len == 8) |
| 1345 | mac_addr_p += 2; |
| 1346 | else if (mac_len != 6) { |
| 1347 | dev_err(&dev->dev, "VETH_MAC_ADDR attribute wrong len %d\n", |
| 1348 | mac_len); |
| 1349 | return -EINVAL; |
| 1350 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1351 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1352 | mcastFilterSize_p = (unsigned int *)vio_get_attribute(dev, |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 1353 | VETH_MCAST_FILTER_SIZE, NULL); |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1354 | if (!mcastFilterSize_p) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1355 | dev_err(&dev->dev, "Can't find VETH_MCAST_FILTER_SIZE " |
| 1356 | "attribute\n"); |
Santiago Leon | be35ae9 | 2010-09-03 18:29:36 +0000 | [diff] [blame] | 1357 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
| 1361 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1362 | if (!netdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | return -ENOMEM; |
| 1364 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1365 | adapter = netdev_priv(netdev); |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1366 | dev_set_drvdata(&dev->dev, netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
| 1368 | adapter->vdev = dev; |
| 1369 | adapter->netdev = netdev; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1370 | adapter->mcastFilterSize = *mcastFilterSize_p; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1371 | adapter->pool_config = 0; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1372 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1373 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
| 1374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | adapter->mac_addr = 0; |
Joe Perches | d458cdf | 2013-10-01 19:04:40 -0700 | [diff] [blame] | 1376 | memcpy(&adapter->mac_addr, mac_addr_p, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | netdev->irq = dev->irq; |
Alexander Beregalov | e186d17 | 2009-04-15 12:52:39 +0000 | [diff] [blame] | 1379 | netdev->netdev_ops = &ibmveth_netdev_ops; |
| 1380 | netdev->ethtool_ops = &netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | SET_NETDEV_DEV(netdev, &dev->dev); |
Michał Mirosław | b9367bf | 2011-04-19 02:14:25 +0000 | [diff] [blame] | 1382 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
| 1383 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; |
| 1384 | netdev->features |= netdev->hw_features; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | |
Stephen Rothwell | d44b5e0 | 2009-05-11 21:44:51 +0000 | [diff] [blame] | 1386 | memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1388 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1389 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; |
Greg Kroah-Hartman | 8dde2a9 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 1390 | int error; |
| 1391 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1392 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
| 1393 | pool_count[i], pool_size[i], |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1394 | pool_active[i]); |
Greg Kroah-Hartman | 8dde2a9 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 1395 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
| 1396 | &dev->dev.kobj, "pool%d", i); |
| 1397 | if (!error) |
| 1398 | kobject_uevent(kobj, KOBJ_ADD); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1399 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1401 | netdev_dbg(netdev, "adapter @ 0x%p\n", adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 1404 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 1405 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; |
| 1406 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1407 | netdev_dbg(netdev, "registering netdev...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | |
Michał Mirosław | b801a4e | 2011-04-28 11:59:15 +1000 | [diff] [blame] | 1409 | ibmveth_set_features(netdev, netdev->features); |
| 1410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | rc = register_netdev(netdev); |
| 1412 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1413 | if (rc) { |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1414 | netdev_dbg(netdev, "failed to register netdev rc=%d\n", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | free_netdev(netdev); |
| 1416 | return rc; |
| 1417 | } |
| 1418 | |
Santiago Leon | c43ced1 | 2010-09-03 18:29:14 +0000 | [diff] [blame] | 1419 | netdev_dbg(netdev, "registered\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | return 0; |
| 1422 | } |
| 1423 | |
Bill Pemberton | e11787a | 2012-12-03 09:23:12 -0500 | [diff] [blame] | 1424 | static int ibmveth_remove(struct vio_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | { |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1426 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1427 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1428 | int i; |
| 1429 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1430 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 1431 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | |
| 1433 | unregister_netdev(netdev); |
| 1434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | free_netdev(netdev); |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1436 | dev_set_drvdata(&dev->dev, NULL); |
| 1437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | return 0; |
| 1439 | } |
| 1440 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1441 | static struct attribute veth_active_attr; |
| 1442 | static struct attribute veth_num_attr; |
| 1443 | static struct attribute veth_size_attr; |
| 1444 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1445 | static ssize_t veth_pool_show(struct kobject *kobj, |
| 1446 | struct attribute *attr, char *buf) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1447 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1448 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1449 | struct ibmveth_buff_pool, |
| 1450 | kobj); |
| 1451 | |
| 1452 | if (attr == &veth_active_attr) |
| 1453 | return sprintf(buf, "%d\n", pool->active); |
| 1454 | else if (attr == &veth_num_attr) |
| 1455 | return sprintf(buf, "%d\n", pool->size); |
| 1456 | else if (attr == &veth_size_attr) |
| 1457 | return sprintf(buf, "%d\n", pool->buff_size); |
| 1458 | return 0; |
| 1459 | } |
| 1460 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1461 | static ssize_t veth_pool_store(struct kobject *kobj, struct attribute *attr, |
| 1462 | const char *buf, size_t count) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1463 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1464 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1465 | struct ibmveth_buff_pool, |
| 1466 | kobj); |
Greg Kroah-Hartman | c7ae011 | 2009-05-04 21:33:19 -0700 | [diff] [blame] | 1467 | struct net_device *netdev = dev_get_drvdata( |
| 1468 | container_of(kobj->parent, struct device, kobj)); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1469 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1470 | long value = simple_strtol(buf, NULL, 10); |
| 1471 | long rc; |
| 1472 | |
| 1473 | if (attr == &veth_active_attr) { |
| 1474 | if (value && !pool->active) { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1475 | if (netif_running(netdev)) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1476 | if (ibmveth_alloc_buffer_pool(pool)) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1477 | netdev_err(netdev, |
| 1478 | "unable to alloc pool\n"); |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1479 | return -ENOMEM; |
| 1480 | } |
| 1481 | pool->active = 1; |
| 1482 | adapter->pool_config = 1; |
| 1483 | ibmveth_close(netdev); |
| 1484 | adapter->pool_config = 0; |
| 1485 | if ((rc = ibmveth_open(netdev))) |
| 1486 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1487 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1488 | pool->active = 1; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1489 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1490 | } else if (!value && pool->active) { |
| 1491 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; |
| 1492 | int i; |
| 1493 | /* Make sure there is a buffer pool with buffers that |
| 1494 | can hold a packet of the size of the MTU */ |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1495 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1496 | if (pool == &adapter->rx_buff_pool[i]) |
| 1497 | continue; |
| 1498 | if (!adapter->rx_buff_pool[i].active) |
| 1499 | continue; |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1500 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
| 1501 | break; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1502 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1503 | |
Santiago Leon | 517e80e | 2010-09-03 18:29:25 +0000 | [diff] [blame] | 1504 | if (i == IBMVETH_NUM_BUFF_POOLS) { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1505 | netdev_err(netdev, "no active pool >= MTU\n"); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1506 | return -EPERM; |
| 1507 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1508 | |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1509 | if (netif_running(netdev)) { |
| 1510 | adapter->pool_config = 1; |
| 1511 | ibmveth_close(netdev); |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1512 | pool->active = 0; |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1513 | adapter->pool_config = 0; |
| 1514 | if ((rc = ibmveth_open(netdev))) |
| 1515 | return rc; |
| 1516 | } |
Santiago Leon | ea866e6 | 2008-07-24 04:34:23 +1000 | [diff] [blame] | 1517 | pool->active = 0; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1518 | } |
| 1519 | } else if (attr == &veth_num_attr) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1520 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1521 | return -EINVAL; |
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 | if (netif_running(netdev)) { |
| 1524 | adapter->pool_config = 1; |
| 1525 | ibmveth_close(netdev); |
| 1526 | adapter->pool_config = 0; |
| 1527 | pool->size = value; |
| 1528 | if ((rc = ibmveth_open(netdev))) |
| 1529 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1530 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1531 | pool->size = value; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1532 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1533 | } |
| 1534 | } else if (attr == &veth_size_attr) { |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1535 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1536 | return -EINVAL; |
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 | if (netif_running(netdev)) { |
| 1539 | adapter->pool_config = 1; |
| 1540 | ibmveth_close(netdev); |
| 1541 | adapter->pool_config = 0; |
| 1542 | pool->buff_size = value; |
| 1543 | if ((rc = ibmveth_open(netdev))) |
| 1544 | return rc; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1545 | } else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1546 | pool->buff_size = value; |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1547 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | /* kick the interrupt handler to allocate/deallocate pools */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1552 | ibmveth_interrupt(netdev->irq, netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1553 | return count; |
| 1554 | } |
| 1555 | |
| 1556 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1557 | #define ATTR(_name, _mode) \ |
| 1558 | struct attribute veth_##_name##_attr = { \ |
| 1559 | .name = __stringify(_name), .mode = _mode, \ |
| 1560 | }; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1561 | |
| 1562 | static ATTR(active, 0644); |
| 1563 | static ATTR(num, 0644); |
| 1564 | static ATTR(size, 0644); |
| 1565 | |
Santiago Leon | f148f61 | 2010-09-03 18:29:30 +0000 | [diff] [blame] | 1566 | static struct attribute *veth_pool_attrs[] = { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1567 | &veth_active_attr, |
| 1568 | &veth_num_attr, |
| 1569 | &veth_size_attr, |
| 1570 | NULL, |
| 1571 | }; |
| 1572 | |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 1573 | static const struct sysfs_ops veth_pool_ops = { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1574 | .show = veth_pool_show, |
| 1575 | .store = veth_pool_store, |
| 1576 | }; |
| 1577 | |
| 1578 | static struct kobj_type ktype_veth_pool = { |
| 1579 | .release = NULL, |
| 1580 | .sysfs_ops = &veth_pool_ops, |
| 1581 | .default_attrs = veth_pool_attrs, |
| 1582 | }; |
| 1583 | |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 1584 | static int ibmveth_resume(struct device *dev) |
| 1585 | { |
| 1586 | struct net_device *netdev = dev_get_drvdata(dev); |
| 1587 | ibmveth_interrupt(netdev->irq, netdev); |
| 1588 | return 0; |
| 1589 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1590 | |
Bill Pemberton | e11787a | 2012-12-03 09:23:12 -0500 | [diff] [blame] | 1591 | static struct vio_device_id ibmveth_device_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | { "network", "IBM,l-lan"}, |
Stephen Rothwell | fb120da | 2005-08-17 16:42:59 +1000 | [diff] [blame] | 1593 | { "", "" } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
| 1596 | |
Brian King | e7a3af5 | 2010-05-07 08:56:08 +0000 | [diff] [blame] | 1597 | static struct dev_pm_ops ibmveth_pm_ops = { |
| 1598 | .resume = ibmveth_resume |
| 1599 | }; |
| 1600 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | static struct vio_driver ibmveth_driver = { |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1602 | .id_table = ibmveth_device_table, |
| 1603 | .probe = ibmveth_probe, |
| 1604 | .remove = ibmveth_remove, |
Robert Jennings | 1096d63 | 2008-07-24 04:34:52 +1000 | [diff] [blame] | 1605 | .get_desired_dma = ibmveth_get_desired_dma, |
Benjamin Herrenschmidt | cb52d89 | 2012-03-26 19:06:30 +0000 | [diff] [blame] | 1606 | .name = ibmveth_driver_name, |
| 1607 | .pm = &ibmveth_pm_ops, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | }; |
| 1609 | |
| 1610 | static int __init ibmveth_module_init(void) |
| 1611 | { |
Santiago Leon | 21c2dec | 2010-09-03 18:29:19 +0000 | [diff] [blame] | 1612 | printk(KERN_DEBUG "%s: %s %s\n", ibmveth_driver_name, |
| 1613 | ibmveth_driver_string, ibmveth_driver_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | return vio_register_driver(&ibmveth_driver); |
| 1616 | } |
| 1617 | |
| 1618 | static void __exit ibmveth_module_exit(void) |
| 1619 | { |
| 1620 | vio_unregister_driver(&ibmveth_driver); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1621 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | |
| 1623 | module_init(ibmveth_module_init); |
| 1624 | module_exit(ibmveth_module_exit); |