enic: add Cisco 10G Ethernet NIC driver
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c
new file mode 100644
index 0000000..95184b9
--- /dev/null
+++ b/drivers/net/enic/enic_res.c
@@ -0,0 +1,370 @@
+/*
+ * Copyright 2008 Cisco Systems, Inc. All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+
+#include "wq_enet_desc.h"
+#include "rq_enet_desc.h"
+#include "cq_enet_desc.h"
+#include "vnic_resource.h"
+#include "vnic_enet.h"
+#include "vnic_dev.h"
+#include "vnic_wq.h"
+#include "vnic_rq.h"
+#include "vnic_cq.h"
+#include "vnic_intr.h"
+#include "vnic_stats.h"
+#include "vnic_nic.h"
+#include "vnic_rss.h"
+#include "enic_res.h"
+#include "enic.h"
+
+int enic_get_vnic_config(struct enic *enic)
+{
+ struct vnic_enet_config *c = &enic->config;
+ int err;
+
+ err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr);
+ if (err) {
+ printk(KERN_ERR PFX "Error getting MAC addr, %d\n", err);
+ return err;
+ }
+
+#define GET_CONFIG(m) \
+ do { \
+ err = vnic_dev_spec(enic->vdev, \
+ offsetof(struct vnic_enet_config, m), \
+ sizeof(c->m), &c->m); \
+ if (err) { \
+ printk(KERN_ERR PFX \
+ "Error getting %s, %d\n", #m, err); \
+ return err; \
+ } \
+ } while (0)
+
+ GET_CONFIG(flags);
+ GET_CONFIG(wq_desc_count);
+ GET_CONFIG(rq_desc_count);
+ GET_CONFIG(mtu);
+ GET_CONFIG(intr_timer);
+ GET_CONFIG(intr_timer_type);
+ GET_CONFIG(intr_mode);
+
+ c->wq_desc_count =
+ min_t(u32, ENIC_MAX_WQ_DESCS,
+ max_t(u32, ENIC_MIN_WQ_DESCS,
+ c->wq_desc_count));
+ c->wq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */
+
+ c->rq_desc_count =
+ min_t(u32, ENIC_MAX_RQ_DESCS,
+ max_t(u32, ENIC_MIN_RQ_DESCS,
+ c->rq_desc_count));
+ c->rq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */
+
+ if (c->mtu == 0)
+ c->mtu = 1500;
+ c->mtu = min_t(u16, ENIC_MAX_MTU,
+ max_t(u16, ENIC_MIN_MTU,
+ c->mtu));
+
+ c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
+
+ printk(KERN_INFO PFX "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
+ "wq/rq %d/%d\n",
+ enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
+ enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
+ c->wq_desc_count, c->rq_desc_count);
+ printk(KERN_INFO PFX "vNIC mtu %d csum tx/rx %d/%d tso/lro %d/%d "
+ "intr timer %d\n",
+ c->mtu, ENIC_SETTING(enic, TXCSUM),
+ ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO),
+ ENIC_SETTING(enic, LRO), c->intr_timer);
+
+ return 0;
+}
+
+void enic_add_station_addr(struct enic *enic)
+{
+ vnic_dev_add_addr(enic->vdev, enic->mac_addr);
+}
+
+void enic_add_multicast_addr(struct enic *enic, u8 *addr)
+{
+ vnic_dev_add_addr(enic->vdev, addr);
+}
+
+void enic_del_multicast_addr(struct enic *enic, u8 *addr)
+{
+ vnic_dev_del_addr(enic->vdev, addr);
+}
+
+void enic_add_vlan(struct enic *enic, u16 vlanid)
+{
+ u64 a0 = vlanid, a1 = 0;
+ int wait = 1000;
+ int err;
+
+ err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
+ if (err)
+ printk(KERN_ERR PFX "Can't add vlan id, %d\n", err);
+}
+
+void enic_del_vlan(struct enic *enic, u16 vlanid)
+{
+ u64 a0 = vlanid, a1 = 0;
+ int wait = 1000;
+ int err;
+
+ err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
+ if (err)
+ printk(KERN_ERR PFX "Can't delete vlan id, %d\n", err);
+}
+
+int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
+ u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
+ u8 ig_vlan_strip_en)
+{
+ u64 a0, a1;
+ u32 nic_cfg;
+ int wait = 1000;
+
+ vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
+ rss_hash_type, rss_hash_bits, rss_base_cpu,
+ rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
+
+ a0 = nic_cfg;
+ a1 = 0;
+
+ return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
+}
+
+void enic_free_vnic_resources(struct enic *enic)
+{
+ unsigned int i;
+
+ for (i = 0; i < enic->wq_count; i++)
+ vnic_wq_free(&enic->wq[i]);
+ for (i = 0; i < enic->rq_count; i++)
+ vnic_rq_free(&enic->rq[i]);
+ for (i = 0; i < enic->cq_count; i++)
+ vnic_cq_free(&enic->cq[i]);
+ for (i = 0; i < enic->intr_count; i++)
+ vnic_intr_free(&enic->intr[i]);
+}
+
+void enic_get_res_counts(struct enic *enic)
+{
+ enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
+ enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
+ enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
+ enic->intr_count = vnic_dev_get_res_count(enic->vdev,
+ RES_TYPE_INTR_CTRL);
+
+ printk(KERN_INFO PFX "vNIC resources avail: "
+ "wq %d rq %d cq %d intr %d\n",
+ enic->wq_count, enic->rq_count,
+ enic->cq_count, enic->intr_count);
+}
+
+void enic_init_vnic_resources(struct enic *enic)
+{
+ enum vnic_dev_intr_mode intr_mode;
+ unsigned int mask_on_assertion;
+ unsigned int interrupt_offset;
+ unsigned int error_interrupt_enable;
+ unsigned int error_interrupt_offset;
+ unsigned int cq_index;
+ unsigned int i;
+
+ intr_mode = vnic_dev_get_intr_mode(enic->vdev);
+
+ /* Init RQ/WQ resources.
+ *
+ * RQ[0 - n-1] point to CQ[0 - n-1]
+ * WQ[0 - m-1] point to CQ[n - n+m-1]
+ *
+ * Error interrupt is not enabled for MSI.
+ */
+
+ switch (intr_mode) {
+ case VNIC_DEV_INTR_MODE_INTX:
+ case VNIC_DEV_INTR_MODE_MSIX:
+ error_interrupt_enable = 1;
+ error_interrupt_offset = enic->intr_count - 2;
+ break;
+ default:
+ error_interrupt_enable = 0;
+ error_interrupt_offset = 0;
+ break;
+ }
+
+ for (i = 0; i < enic->rq_count; i++) {
+ cq_index = i;
+ vnic_rq_init(&enic->rq[i],
+ cq_index,
+ error_interrupt_enable,
+ error_interrupt_offset);
+ }
+
+ for (i = 0; i < enic->wq_count; i++) {
+ cq_index = enic->rq_count + i;
+ vnic_wq_init(&enic->wq[i],
+ cq_index,
+ error_interrupt_enable,
+ error_interrupt_offset);
+ }
+
+ /* Init CQ resources
+ *
+ * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
+ * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
+ */
+
+ for (i = 0; i < enic->cq_count; i++) {
+
+ switch (intr_mode) {
+ case VNIC_DEV_INTR_MODE_MSIX:
+ interrupt_offset = i;
+ break;
+ default:
+ interrupt_offset = 0;
+ break;
+ }
+
+ vnic_cq_init(&enic->cq[i],
+ 0 /* flow_control_enable */,
+ 1 /* color_enable */,
+ 0 /* cq_head */,
+ 0 /* cq_tail */,
+ 1 /* cq_tail_color */,
+ 1 /* interrupt_enable */,
+ 1 /* cq_entry_enable */,
+ 0 /* cq_message_enable */,
+ interrupt_offset,
+ 0 /* cq_message_addr */);
+ }
+
+ /* Init INTR resources
+ *
+ * mask_on_assertion is not used for INTx due to the level-
+ * triggered nature of INTx
+ */
+
+ switch (intr_mode) {
+ case VNIC_DEV_INTR_MODE_MSI:
+ case VNIC_DEV_INTR_MODE_MSIX:
+ mask_on_assertion = 1;
+ break;
+ default:
+ mask_on_assertion = 0;
+ break;
+ }
+
+ for (i = 0; i < enic->intr_count; i++) {
+ vnic_intr_init(&enic->intr[i],
+ enic->config.intr_timer,
+ enic->config.intr_timer_type,
+ mask_on_assertion);
+ }
+
+ /* Clear LIF stats
+ */
+
+ vnic_dev_stats_clear(enic->vdev);
+}
+
+int enic_alloc_vnic_resources(struct enic *enic)
+{
+ enum vnic_dev_intr_mode intr_mode;
+ unsigned int i;
+ int err;
+
+ intr_mode = vnic_dev_get_intr_mode(enic->vdev);
+
+ printk(KERN_INFO PFX "vNIC resources used: "
+ "wq %d rq %d cq %d intr %d intr mode %s\n",
+ enic->wq_count, enic->rq_count,
+ enic->cq_count, enic->intr_count,
+ intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
+ intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
+ intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
+ "unknown"
+ );
+
+ /* Allocate queue resources
+ */
+
+ for (i = 0; i < enic->wq_count; i++) {
+ err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
+ enic->config.wq_desc_count,
+ sizeof(struct wq_enet_desc));
+ if (err)
+ goto err_out_cleanup;
+ }
+
+ for (i = 0; i < enic->rq_count; i++) {
+ err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
+ enic->config.rq_desc_count,
+ sizeof(struct rq_enet_desc));
+ if (err)
+ goto err_out_cleanup;
+ }
+
+ for (i = 0; i < enic->cq_count; i++) {
+ if (i < enic->rq_count)
+ err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
+ enic->config.rq_desc_count,
+ sizeof(struct cq_enet_rq_desc));
+ else
+ err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
+ enic->config.wq_desc_count,
+ sizeof(struct cq_enet_wq_desc));
+ if (err)
+ goto err_out_cleanup;
+ }
+
+ for (i = 0; i < enic->intr_count; i++) {
+ err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
+ if (err)
+ goto err_out_cleanup;
+ }
+
+ /* Hook remaining resource
+ */
+
+ enic->legacy_pba = vnic_dev_get_res(enic->vdev,
+ RES_TYPE_INTR_PBA_LEGACY, 0);
+ if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
+ printk(KERN_ERR PFX "Failed to hook legacy pba resource\n");
+ err = -ENODEV;
+ goto err_out_cleanup;
+ }
+
+ return 0;
+
+err_out_cleanup:
+ enic_free_vnic_resources(enic);
+
+ return err;
+}