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390 lines
9.5 KiB
390 lines
9.5 KiB
/* |
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* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. |
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* Copyright 2007 Nuova Systems, Inc. All rights reserved. |
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* |
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* This program is free software; you may redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/types.h> |
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#include <linux/pci.h> |
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#include <linux/netdevice.h> |
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#include "wq_enet_desc.h" |
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#include "rq_enet_desc.h" |
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#include "cq_enet_desc.h" |
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#include "vnic_resource.h" |
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#include "vnic_enet.h" |
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#include "vnic_dev.h" |
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#include "vnic_wq.h" |
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#include "vnic_rq.h" |
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#include "vnic_cq.h" |
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#include "vnic_intr.h" |
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#include "vnic_stats.h" |
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#include "vnic_nic.h" |
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#include "vnic_rss.h" |
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#include "enic_res.h" |
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#include "enic.h" |
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int enic_get_vnic_config(struct enic *enic) |
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{ |
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struct vnic_enet_config *c = &enic->config; |
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int err; |
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err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr); |
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if (err) { |
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dev_err(enic_get_dev(enic), |
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"Error getting MAC addr, %d\n", err); |
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return err; |
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} |
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#define GET_CONFIG(m) \ |
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do { \ |
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err = vnic_dev_spec(enic->vdev, \ |
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offsetof(struct vnic_enet_config, m), \ |
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sizeof(c->m), &c->m); \ |
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if (err) { \ |
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dev_err(enic_get_dev(enic), \ |
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"Error getting %s, %d\n", #m, err); \ |
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return err; \ |
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} \ |
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} while (0) |
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GET_CONFIG(flags); |
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GET_CONFIG(wq_desc_count); |
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GET_CONFIG(rq_desc_count); |
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GET_CONFIG(mtu); |
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GET_CONFIG(intr_timer_type); |
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GET_CONFIG(intr_mode); |
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GET_CONFIG(intr_timer_usec); |
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GET_CONFIG(loop_tag); |
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GET_CONFIG(num_arfs); |
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c->wq_desc_count = |
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min_t(u32, ENIC_MAX_WQ_DESCS, |
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max_t(u32, ENIC_MIN_WQ_DESCS, |
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c->wq_desc_count)); |
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c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ |
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c->rq_desc_count = |
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min_t(u32, ENIC_MAX_RQ_DESCS, |
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max_t(u32, ENIC_MIN_RQ_DESCS, |
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c->rq_desc_count)); |
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c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ |
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if (c->mtu == 0) |
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c->mtu = 1500; |
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c->mtu = min_t(u16, ENIC_MAX_MTU, |
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max_t(u16, ENIC_MIN_MTU, |
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c->mtu)); |
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c->intr_timer_usec = min_t(u32, c->intr_timer_usec, |
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vnic_dev_get_intr_coal_timer_max(enic->vdev)); |
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dev_info(enic_get_dev(enic), |
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"vNIC MAC addr %pM wq/rq %d/%d mtu %d\n", |
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enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu); |
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dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s " |
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"tso/lro %s/%s rss %s intr mode %s type %s timer %d usec " |
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"loopback tag 0x%04x\n", |
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ENIC_SETTING(enic, TXCSUM) ? "yes" : "no", |
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ENIC_SETTING(enic, RXCSUM) ? "yes" : "no", |
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ENIC_SETTING(enic, TSO) ? "yes" : "no", |
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ENIC_SETTING(enic, LRO) ? "yes" : "no", |
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ENIC_SETTING(enic, RSS) ? "yes" : "no", |
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c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" : |
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c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" : |
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c->intr_mode == VENET_INTR_MODE_ANY ? "any" : |
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"unknown", |
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c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" : |
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c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" : |
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"unknown", |
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c->intr_timer_usec, |
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c->loop_tag); |
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return 0; |
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} |
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int enic_add_vlan(struct enic *enic, u16 vlanid) |
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{ |
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u64 a0 = vlanid, a1 = 0; |
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int wait = 1000; |
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int err; |
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err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait); |
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if (err) |
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dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err); |
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return err; |
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} |
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int enic_del_vlan(struct enic *enic, u16 vlanid) |
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{ |
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u64 a0 = vlanid, a1 = 0; |
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int wait = 1000; |
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int err; |
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err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait); |
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if (err) |
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dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err); |
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return err; |
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} |
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int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, |
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u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, |
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u8 ig_vlan_strip_en) |
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{ |
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enum vnic_devcmd_cmd cmd = CMD_NIC_CFG; |
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u64 a0, a1; |
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u32 nic_cfg; |
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int wait = 1000; |
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vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, |
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rss_hash_type, rss_hash_bits, rss_base_cpu, |
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rss_enable, tso_ipid_split_en, ig_vlan_strip_en); |
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a0 = nic_cfg; |
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a1 = 0; |
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if (rss_hash_type & (NIC_CFG_RSS_HASH_TYPE_UDP_IPV4 | |
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NIC_CFG_RSS_HASH_TYPE_UDP_IPV6)) |
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cmd = CMD_NIC_CFG_CHK; |
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return vnic_dev_cmd(enic->vdev, cmd, &a0, &a1, wait); |
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} |
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int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len) |
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{ |
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u64 a0 = (u64)key_pa, a1 = len; |
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int wait = 1000; |
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return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait); |
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} |
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int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len) |
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{ |
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u64 a0 = (u64)cpu_pa, a1 = len; |
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int wait = 1000; |
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return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait); |
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} |
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void enic_free_vnic_resources(struct enic *enic) |
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{ |
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unsigned int i; |
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for (i = 0; i < enic->wq_count; i++) |
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vnic_wq_free(&enic->wq[i]); |
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for (i = 0; i < enic->rq_count; i++) |
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vnic_rq_free(&enic->rq[i]); |
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for (i = 0; i < enic->cq_count; i++) |
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vnic_cq_free(&enic->cq[i]); |
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for (i = 0; i < enic->intr_count; i++) |
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vnic_intr_free(&enic->intr[i]); |
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} |
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void enic_get_res_counts(struct enic *enic) |
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{ |
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enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ); |
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enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ); |
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enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ); |
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enic->intr_count = vnic_dev_get_res_count(enic->vdev, |
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RES_TYPE_INTR_CTRL); |
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dev_info(enic_get_dev(enic), |
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"vNIC resources avail: wq %d rq %d cq %d intr %d\n", |
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enic->wq_count, enic->rq_count, |
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enic->cq_count, enic->intr_count); |
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} |
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void enic_init_vnic_resources(struct enic *enic) |
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{ |
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enum vnic_dev_intr_mode intr_mode; |
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unsigned int mask_on_assertion; |
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unsigned int interrupt_offset; |
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unsigned int error_interrupt_enable; |
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unsigned int error_interrupt_offset; |
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unsigned int cq_index; |
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unsigned int i; |
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intr_mode = vnic_dev_get_intr_mode(enic->vdev); |
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/* Init RQ/WQ resources. |
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* |
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* RQ[0 - n-1] point to CQ[0 - n-1] |
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* WQ[0 - m-1] point to CQ[n - n+m-1] |
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* |
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* Error interrupt is not enabled for MSI. |
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*/ |
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switch (intr_mode) { |
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case VNIC_DEV_INTR_MODE_INTX: |
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case VNIC_DEV_INTR_MODE_MSIX: |
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error_interrupt_enable = 1; |
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error_interrupt_offset = enic->intr_count - 2; |
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break; |
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default: |
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error_interrupt_enable = 0; |
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error_interrupt_offset = 0; |
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break; |
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} |
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for (i = 0; i < enic->rq_count; i++) { |
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cq_index = i; |
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vnic_rq_init(&enic->rq[i], |
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cq_index, |
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error_interrupt_enable, |
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error_interrupt_offset); |
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} |
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for (i = 0; i < enic->wq_count; i++) { |
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cq_index = enic->rq_count + i; |
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vnic_wq_init(&enic->wq[i], |
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cq_index, |
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error_interrupt_enable, |
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error_interrupt_offset); |
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} |
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/* Init CQ resources |
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* |
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* CQ[0 - n+m-1] point to INTR[0] for INTx, MSI |
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* CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X |
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*/ |
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for (i = 0; i < enic->cq_count; i++) { |
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switch (intr_mode) { |
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case VNIC_DEV_INTR_MODE_MSIX: |
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interrupt_offset = i; |
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break; |
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default: |
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interrupt_offset = 0; |
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break; |
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} |
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vnic_cq_init(&enic->cq[i], |
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0 /* flow_control_enable */, |
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1 /* color_enable */, |
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0 /* cq_head */, |
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0 /* cq_tail */, |
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1 /* cq_tail_color */, |
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1 /* interrupt_enable */, |
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1 /* cq_entry_enable */, |
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0 /* cq_message_enable */, |
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interrupt_offset, |
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0 /* cq_message_addr */); |
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} |
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/* Init INTR resources |
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* |
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* mask_on_assertion is not used for INTx due to the level- |
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* triggered nature of INTx |
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*/ |
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switch (intr_mode) { |
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case VNIC_DEV_INTR_MODE_MSI: |
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case VNIC_DEV_INTR_MODE_MSIX: |
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mask_on_assertion = 1; |
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break; |
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default: |
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mask_on_assertion = 0; |
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break; |
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} |
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for (i = 0; i < enic->intr_count; i++) { |
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vnic_intr_init(&enic->intr[i], |
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enic->config.intr_timer_usec, |
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enic->config.intr_timer_type, |
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mask_on_assertion); |
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} |
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} |
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int enic_alloc_vnic_resources(struct enic *enic) |
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{ |
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enum vnic_dev_intr_mode intr_mode; |
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unsigned int i; |
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int err; |
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intr_mode = vnic_dev_get_intr_mode(enic->vdev); |
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dev_info(enic_get_dev(enic), "vNIC resources used: " |
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"wq %d rq %d cq %d intr %d intr mode %s\n", |
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enic->wq_count, enic->rq_count, |
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enic->cq_count, enic->intr_count, |
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intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : |
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intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : |
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intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" : |
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"unknown"); |
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/* Allocate queue resources |
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*/ |
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for (i = 0; i < enic->wq_count; i++) { |
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err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i, |
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enic->config.wq_desc_count, |
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sizeof(struct wq_enet_desc)); |
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if (err) |
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goto err_out_cleanup; |
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} |
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for (i = 0; i < enic->rq_count; i++) { |
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err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i, |
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enic->config.rq_desc_count, |
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sizeof(struct rq_enet_desc)); |
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if (err) |
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goto err_out_cleanup; |
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} |
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for (i = 0; i < enic->cq_count; i++) { |
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if (i < enic->rq_count) |
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err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, |
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enic->config.rq_desc_count, |
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sizeof(struct cq_enet_rq_desc)); |
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else |
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err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, |
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enic->config.wq_desc_count, |
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sizeof(struct cq_enet_wq_desc)); |
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if (err) |
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goto err_out_cleanup; |
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} |
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for (i = 0; i < enic->intr_count; i++) { |
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err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i); |
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if (err) |
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goto err_out_cleanup; |
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} |
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/* Hook remaining resource |
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*/ |
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enic->legacy_pba = vnic_dev_get_res(enic->vdev, |
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RES_TYPE_INTR_PBA_LEGACY, 0); |
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if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { |
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dev_err(enic_get_dev(enic), |
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"Failed to hook legacy pba resource\n"); |
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err = -ENODEV; |
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goto err_out_cleanup; |
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} |
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return 0; |
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err_out_cleanup: |
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enic_free_vnic_resources(enic); |
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return err; |
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}
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