#include <linux/slab.h>
#include <linux/io-mapping.h>
#include <linux/delay.h>
-#include <linux/netdevice.h>
#include <linux/kmod.h>
#include <linux/mlx4/device.h>
#endif /* CONFIG_PCI_MSI */
-static int num_vfs;
-module_param(num_vfs, int, 0444);
-MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0");
+static uint8_t num_vfs[3] = {0, 0, 0};
+static int num_vfs_argc = 3;
+module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
+MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
+ "num_vfs=port1,port2,port1+2");
-static int probe_vf;
-module_param(probe_vf, int, 0644);
-MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)");
+static uint8_t probe_vf[3] = {0, 0, 0};
+static int probe_vfs_argc = 3;
+module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
+MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
+ "probe_vf=port1,port2,port1+2");
int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
module_param_named(log_num_mgm_entry_size,
int i;
for (i = 1; i <= dev->caps.num_ports; i++) {
- dev->caps.gid_table_len[i] = 1;
+ if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
+ dev->caps.gid_table_len[i] =
+ mlx4_get_slave_num_gids(dev, 0, i);
+ else
+ dev->caps.gid_table_len[i] = 1;
dev->caps.pkey_table_len[i] =
dev->phys_caps.pkey_phys_table_len[i] - 1;
}
if (mlx4_log_num_mgm_entry_size == -1 &&
dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
(!mlx4_is_mfunc(dev) ||
- (dev_cap->fs_max_num_qp_per_entry >= (num_vfs + 1))) &&
+ (dev_cap->fs_max_num_qp_per_entry >= (dev->num_vfs + 1))) &&
choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
dev->oper_log_mgm_entry_size =
struct mlx4_priv *priv = mlx4_priv(dev);
struct msix_entry *entries;
int nreq = min_t(int, dev->caps.num_ports *
- min_t(int, netif_get_num_default_rss_queues() + 1,
+ min_t(int, num_online_cpus() + 1,
MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
- int err;
int i;
if (msi_x) {
for (i = 0; i < nreq; ++i)
entries[i].entry = i;
- retry:
- err = pci_enable_msix(dev->pdev, entries, nreq);
- if (err) {
- /* Try again if at least 2 vectors are available */
- if (err > 1) {
- mlx4_info(dev, "Requested %d vectors, "
- "but only %d MSI-X vectors available, "
- "trying again\n", nreq, err);
- nreq = err;
- goto retry;
- }
+ nreq = pci_enable_msix_range(dev->pdev, entries, 2, nreq);
+
+ if (nreq < 0) {
kfree(entries);
goto no_msi;
- }
-
- if (nreq <
- MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
+ } else if (nreq < MSIX_LEGACY_SZ +
+ dev->caps.num_ports * MIN_MSIX_P_PORT) {
/*Working in legacy mode , all EQ's shared*/
dev->caps.comp_pool = 0;
dev->caps.num_comp_vectors = nreq - 1;
struct mlx4_dev *dev;
int err;
int port;
+ int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
+ int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
+ const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
+ {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
+ unsigned total_vfs = 0;
+ int sriov_initialized = 0;
+ unsigned int i;
pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
* per port, we must limit the number of VFs to 63 (since their are
* 128 MACs)
*/
- if (num_vfs >= MLX4_MAX_NUM_VF) {
+ for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
+ total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
+ nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
+ if (nvfs[i] < 0) {
+ dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
+ return -EINVAL;
+ }
+ }
+ for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
+ i++) {
+ prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
+ if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
+ dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
+ return -EINVAL;
+ }
+ }
+ if (total_vfs >= MLX4_MAX_NUM_VF) {
dev_err(&pdev->dev,
"Requested more VF's (%d) than allowed (%d)\n",
- num_vfs, MLX4_MAX_NUM_VF - 1);
+ total_vfs, MLX4_MAX_NUM_VF - 1);
return -EINVAL;
}
- if (num_vfs < 0) {
- pr_err("num_vfs module parameter cannot be negative\n");
- return -EINVAL;
+ for (i = 0; i < MLX4_MAX_PORTS; i++) {
+ if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
+ dev_err(&pdev->dev,
+ "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
+ nvfs[i] + nvfs[2], i + 1,
+ MLX4_MAX_NUM_VF_P_PORT - 1);
+ return -EINVAL;
+ }
}
+
+
/*
* Check for BARs.
*/
if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
/* When acting as pf, we normally skip vfs unless explicitly
* requested to probe them. */
- if (num_vfs && extended_func_num(pdev) > probe_vf) {
- mlx4_warn(dev, "Skipping virtual function:%d\n",
- extended_func_num(pdev));
- err = -ENODEV;
- goto err_free_dev;
+ if (total_vfs) {
+ unsigned vfs_offset = 0;
+ for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
+ vfs_offset + nvfs[i] < extended_func_num(pdev);
+ vfs_offset += nvfs[i], i++)
+ ;
+ if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
+ err = -ENODEV;
+ goto err_free_dev;
+ }
+ if ((extended_func_num(pdev) - vfs_offset)
+ > prb_vf[i]) {
+ mlx4_warn(dev, "Skipping virtual function:%d\n",
+ extended_func_num(pdev));
+ err = -ENODEV;
+ goto err_free_dev;
+ }
}
mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
dev->flags |= MLX4_FLAG_SLAVE;
}
}
- if (num_vfs) {
- mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", num_vfs);
-
- atomic_inc(&pf_loading);
- err = pci_enable_sriov(pdev, num_vfs);
- atomic_dec(&pf_loading);
-
- if (err) {
- mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d).\n",
- err);
+ if (total_vfs) {
+ mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n",
+ total_vfs);
+ dev->dev_vfs = kzalloc(
+ total_vfs * sizeof(*dev->dev_vfs),
+ GFP_KERNEL);
+ if (NULL == dev->dev_vfs) {
+ mlx4_err(dev, "Failed to allocate memory for VFs\n");
err = 0;
} else {
- mlx4_warn(dev, "Running in master mode\n");
- dev->flags |= MLX4_FLAG_SRIOV |
- MLX4_FLAG_MASTER;
- dev->num_vfs = num_vfs;
+ atomic_inc(&pf_loading);
+ err = pci_enable_sriov(pdev, total_vfs);
+ atomic_dec(&pf_loading);
+ if (err) {
+ mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d).\n",
+ err);
+ err = 0;
+ } else {
+ mlx4_warn(dev, "Running in master mode\n");
+ dev->flags |= MLX4_FLAG_SRIOV |
+ MLX4_FLAG_MASTER;
+ dev->num_vfs = total_vfs;
+ sriov_initialized = 1;
+ }
}
}
/* In master functions, the communication channel must be initialized
* after obtaining its address from fw */
if (mlx4_is_master(dev)) {
+ unsigned sum = 0;
err = mlx4_multi_func_init(dev);
if (err) {
mlx4_err(dev, "Failed to init master mfunc"
"interface, aborting.\n");
goto err_close;
}
+ if (sriov_initialized) {
+ int ib_ports = 0;
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
+ ib_ports++;
+
+ if (ib_ports &&
+ (num_vfs_argc > 1 || probe_vfs_argc > 1)) {
+ mlx4_err(dev,
+ "Invalid syntax of num_vfs/probe_vfs "
+ "with IB port. Single port VFs syntax"
+ " is only supported when all ports "
+ "are configured as ethernet\n");
+ goto err_close;
+ }
+ for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); i++) {
+ unsigned j;
+ for (j = 0; j < nvfs[i]; ++sum, ++j) {
+ dev->dev_vfs[sum].min_port =
+ i < 2 ? i + 1 : 1;
+ dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
+ dev->caps.num_ports;
+ }
+ }
+ }
}
err = mlx4_alloc_eq_table(dev);
if (!mlx4_is_slave(dev))
mlx4_free_ownership(dev);
+ kfree(priv->dev.dev_vfs);
+
err_free_dev:
kfree(priv);
kfree(dev->caps.qp0_proxy);
kfree(dev->caps.qp1_tunnel);
kfree(dev->caps.qp1_proxy);
+ kfree(dev->dev_vfs);
kfree(priv);
pci_release_regions(pdev);
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