android_kernel_xiaomi_sm8350/drivers/net/mlx4/en_main.c

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/*
* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 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/cpumask.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 04:04:11 -04:00
#include <linux/slab.h>
#include <linux/mlx4/driver.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/cmd.h>
#include "mlx4_en.h"
MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");
static const char mlx4_en_version[] =
DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
DRV_VERSION " (" DRV_RELDATE ")\n";
#define MLX4_EN_PARM_INT(X, def_val, desc) \
static unsigned int X = def_val;\
module_param(X , uint, 0444); \
MODULE_PARM_DESC(X, desc);
/*
* Device scope module parameters
*/
/* Use a XOR rathern than Toeplitz hash function for RSS */
MLX4_EN_PARM_INT(rss_xor, 0, "Use XOR hash function for RSS");
/* RSS hash type mask - default to <saddr, daddr, sport, dport> */
MLX4_EN_PARM_INT(rss_mask, 0xf, "RSS hash type bitmask");
/* Number of LRO sessions per Rx ring (rounded up to a power of two) */
MLX4_EN_PARM_INT(num_lro, MLX4_EN_MAX_LRO_DESCRIPTORS,
"Number of LRO sessions per ring or disabled (0)");
/* Priority pausing */
MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
" Per priority bit mask");
MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
" Per priority bit mask");
int en_print(const char *level, const struct mlx4_en_priv *priv,
const char *format, ...)
{
va_list args;
struct va_format vaf;
int i;
va_start(args, format);
vaf.fmt = format;
vaf.va = &args;
if (priv->registered)
i = printk("%s%s: %s: %pV",
level, DRV_NAME, priv->dev->name, &vaf);
else
i = printk("%s%s: %s: Port %d: %pV",
level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
priv->port, &vaf);
va_end(args);
return i;
}
static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
{
struct mlx4_en_profile *params = &mdev->profile;
int i;
params->rss_xor = (rss_xor != 0);
params->rss_mask = rss_mask & 0x1f;
params->num_lro = min_t(int, num_lro , MLX4_EN_MAX_LRO_DESCRIPTORS);
for (i = 1; i <= MLX4_MAX_PORTS; i++) {
params->prof[i].rx_pause = 1;
params->prof[i].rx_ppp = pfcrx;
params->prof[i].tx_pause = 1;
params->prof[i].tx_ppp = pfctx;
params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
params->prof[i].tx_ring_num = MLX4_EN_NUM_TX_RINGS +
(!!pfcrx) * MLX4_EN_NUM_PPP_RINGS;
}
return 0;
}
static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
enum mlx4_dev_event event, int port)
{
struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
struct mlx4_en_priv *priv;
if (!mdev->pndev[port])
return;
priv = netdev_priv(mdev->pndev[port]);
switch (event) {
case MLX4_DEV_EVENT_PORT_UP:
case MLX4_DEV_EVENT_PORT_DOWN:
/* To prevent races, we poll the link state in a separate
task rather than changing it here */
priv->link_state = event;
queue_work(mdev->workqueue, &priv->linkstate_task);
break;
case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
mlx4_err(mdev, "Internal error detected, restarting device\n");
break;
default:
mlx4_warn(mdev, "Unhandled event: %d\n", event);
}
}
static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
{
struct mlx4_en_dev *mdev = endev_ptr;
int i;
mutex_lock(&mdev->state_lock);
mdev->device_up = false;
mutex_unlock(&mdev->state_lock);
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
if (mdev->pndev[i])
mlx4_en_destroy_netdev(mdev->pndev[i]);
flush_workqueue(mdev->workqueue);
destroy_workqueue(mdev->workqueue);
mlx4_mr_free(dev, &mdev->mr);
mlx4_uar_free(dev, &mdev->priv_uar);
mlx4_pd_free(dev, mdev->priv_pdn);
kfree(mdev);
}
static void *mlx4_en_add(struct mlx4_dev *dev)
{
struct mlx4_en_dev *mdev;
int i;
int err;
printk_once(KERN_INFO "%s", mlx4_en_version);
mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
if (!mdev) {
dev_err(&dev->pdev->dev, "Device struct alloc failed, "
"aborting.\n");
err = -ENOMEM;
goto err_free_res;
}
if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
goto err_free_dev;
if (mlx4_uar_alloc(dev, &mdev->priv_uar))
goto err_pd;
mdev->uar_map = ioremap(mdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
if (!mdev->uar_map)
goto err_uar;
spin_lock_init(&mdev->uar_lock);
mdev->dev = dev;
mdev->dma_device = &(dev->pdev->dev);
mdev->pdev = dev->pdev;
mdev->device_up = false;
mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
if (!mdev->LSO_support)
mlx4_warn(mdev, "LSO not supported, please upgrade to later "
"FW version to enable LSO\n");
if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ,
0, 0, &mdev->mr)) {
mlx4_err(mdev, "Failed allocating memory region\n");
goto err_uar;
}
if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
mlx4_err(mdev, "Failed enabling memory region\n");
goto err_mr;
}
/* Build device profile according to supplied module parameters */
err = mlx4_en_get_profile(mdev);
if (err) {
mlx4_err(mdev, "Bad module parameters, aborting.\n");
goto err_mr;
}
/* Configure wich ports to start according to module parameters */
mdev->port_cnt = 0;
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
mdev->port_cnt++;
/* If we did not receive an explicit number of Rx rings, default to
* the number of completion vectors populated by the mlx4_core */
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
mlx4_info(mdev, "Using %d tx rings for port:%d\n",
mdev->profile.prof[i].tx_ring_num, i);
mdev->profile.prof[i].rx_ring_num = min_t(int,
roundup_pow_of_two(dev->caps.num_comp_vectors),
MAX_RX_RINGS);
mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n",
mdev->profile.prof[i].rx_ring_num, i);
}
/* Create our own workqueue for reset/multicast tasks
* Note: we cannot use the shared workqueue because of deadlocks caused
* by the rtnl lock */
mdev->workqueue = create_singlethread_workqueue("mlx4_en");
if (!mdev->workqueue) {
err = -ENOMEM;
goto err_mr;
}
/* At this stage all non-port specific tasks are complete:
* mark the card state as up */
mutex_init(&mdev->state_lock);
mdev->device_up = true;
/* Setup ports */
/* Create a netdev for each port */
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
mlx4_info(mdev, "Activating port:%d\n", i);
if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
mdev->pndev[i] = NULL;
}
return mdev;
err_mr:
mlx4_mr_free(dev, &mdev->mr);
err_uar:
mlx4_uar_free(dev, &mdev->priv_uar);
err_pd:
mlx4_pd_free(dev, mdev->priv_pdn);
err_free_dev:
kfree(mdev);
err_free_res:
return NULL;
}
static struct mlx4_interface mlx4_en_interface = {
.add = mlx4_en_add,
.remove = mlx4_en_remove,
.event = mlx4_en_event,
};
static int __init mlx4_en_init(void)
{
return mlx4_register_interface(&mlx4_en_interface);
}
static void __exit mlx4_en_cleanup(void)
{
mlx4_unregister_interface(&mlx4_en_interface);
}
module_init(mlx4_en_init);
module_exit(mlx4_en_cleanup);