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path: root/drivers/infiniband/hw/cxgb4/device.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/device.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/device.c115
1 files changed, 64 insertions, 51 deletions
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index e29172c2afcb..40a13cc633a3 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -44,7 +44,7 @@ MODULE_DESCRIPTION("Chelsio T4 RDMA Driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);
-static LIST_HEAD(dev_list);
+static LIST_HEAD(uld_ctx_list);
static DEFINE_MUTEX(dev_mutex);
static struct dentry *c4iw_debugfs_root;
@@ -370,18 +370,23 @@ static void c4iw_rdev_close(struct c4iw_rdev *rdev)
c4iw_destroy_resource(&rdev->resource);
}
-static void c4iw_remove(struct c4iw_dev *dev)
+struct uld_ctx {
+ struct list_head entry;
+ struct cxgb4_lld_info lldi;
+ struct c4iw_dev *dev;
+};
+
+static void c4iw_remove(struct uld_ctx *ctx)
{
- PDBG("%s c4iw_dev %p\n", __func__, dev);
- list_del(&dev->entry);
- if (dev->registered)
- c4iw_unregister_device(dev);
- c4iw_rdev_close(&dev->rdev);
- idr_destroy(&dev->cqidr);
- idr_destroy(&dev->qpidr);
- idr_destroy(&dev->mmidr);
- iounmap(dev->rdev.oc_mw_kva);
- ib_dealloc_device(&dev->ibdev);
+ PDBG("%s c4iw_dev %p\n", __func__, ctx->dev);
+ c4iw_unregister_device(ctx->dev);
+ c4iw_rdev_close(&ctx->dev->rdev);
+ idr_destroy(&ctx->dev->cqidr);
+ idr_destroy(&ctx->dev->qpidr);
+ idr_destroy(&ctx->dev->mmidr);
+ iounmap(ctx->dev->rdev.oc_mw_kva);
+ ib_dealloc_device(&ctx->dev->ibdev);
+ ctx->dev = NULL;
}
static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
@@ -392,7 +397,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp));
if (!devp) {
printk(KERN_ERR MOD "Cannot allocate ib device\n");
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
devp->rdev.lldi = *infop;
@@ -402,27 +407,23 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa,
devp->rdev.lldi.vr->ocq.size);
- printk(KERN_INFO MOD "ocq memory: "
+ PDBG(KERN_INFO MOD "ocq memory: "
"hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n",
devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size,
devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva);
- mutex_lock(&dev_mutex);
-
ret = c4iw_rdev_open(&devp->rdev);
if (ret) {
mutex_unlock(&dev_mutex);
printk(KERN_ERR MOD "Unable to open CXIO rdev err %d\n", ret);
ib_dealloc_device(&devp->ibdev);
- return NULL;
+ return ERR_PTR(ret);
}
idr_init(&devp->cqidr);
idr_init(&devp->qpidr);
idr_init(&devp->mmidr);
spin_lock_init(&devp->lock);
- list_add_tail(&devp->entry, &dev_list);
- mutex_unlock(&dev_mutex);
if (c4iw_debugfs_root) {
devp->debugfs_root = debugfs_create_dir(
@@ -435,7 +436,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
{
- struct c4iw_dev *dev;
+ struct uld_ctx *ctx;
static int vers_printed;
int i;
@@ -443,25 +444,33 @@ static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
printk(KERN_INFO MOD "Chelsio T4 RDMA Driver - version %s\n",
DRV_VERSION);
- dev = c4iw_alloc(infop);
- if (!dev)
+ ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
+ if (!ctx) {
+ ctx = ERR_PTR(-ENOMEM);
goto out;
+ }
+ ctx->lldi = *infop;
PDBG("%s found device %s nchan %u nrxq %u ntxq %u nports %u\n",
- __func__, pci_name(dev->rdev.lldi.pdev),
- dev->rdev.lldi.nchan, dev->rdev.lldi.nrxq,
- dev->rdev.lldi.ntxq, dev->rdev.lldi.nports);
+ __func__, pci_name(ctx->lldi.pdev),
+ ctx->lldi.nchan, ctx->lldi.nrxq,
+ ctx->lldi.ntxq, ctx->lldi.nports);
+
+ mutex_lock(&dev_mutex);
+ list_add_tail(&ctx->entry, &uld_ctx_list);
+ mutex_unlock(&dev_mutex);
- for (i = 0; i < dev->rdev.lldi.nrxq; i++)
- PDBG("rxqid[%u] %u\n", i, dev->rdev.lldi.rxq_ids[i]);
+ for (i = 0; i < ctx->lldi.nrxq; i++)
+ PDBG("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]);
out:
- return dev;
+ return ctx;
}
static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp,
const struct pkt_gl *gl)
{
- struct c4iw_dev *dev = handle;
+ struct uld_ctx *ctx = handle;
+ struct c4iw_dev *dev = ctx->dev;
struct sk_buff *skb;
const struct cpl_act_establish *rpl;
unsigned int opcode;
@@ -503,47 +512,49 @@ nomem:
static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state)
{
- struct c4iw_dev *dev = handle;
+ struct uld_ctx *ctx = handle;
PDBG("%s new_state %u\n", __func__, new_state);
switch (new_state) {
case CXGB4_STATE_UP:
- printk(KERN_INFO MOD "%s: Up\n", pci_name(dev->rdev.lldi.pdev));
- if (!dev->registered) {
- int ret;
- ret = c4iw_register_device(dev);
- if (ret)
+ printk(KERN_INFO MOD "%s: Up\n", pci_name(ctx->lldi.pdev));
+ if (!ctx->dev) {
+ int ret = 0;
+
+ ctx->dev = c4iw_alloc(&ctx->lldi);
+ if (!IS_ERR(ctx->dev))
+ ret = c4iw_register_device(ctx->dev);
+ if (IS_ERR(ctx->dev) || ret)
printk(KERN_ERR MOD
"%s: RDMA registration failed: %d\n",
- pci_name(dev->rdev.lldi.pdev), ret);
+ pci_name(ctx->lldi.pdev), ret);
}
break;
case CXGB4_STATE_DOWN:
printk(KERN_INFO MOD "%s: Down\n",
- pci_name(dev->rdev.lldi.pdev));
- if (dev->registered)
- c4iw_unregister_device(dev);
+ pci_name(ctx->lldi.pdev));
+ if (ctx->dev)
+ c4iw_remove(ctx);
break;
case CXGB4_STATE_START_RECOVERY:
printk(KERN_INFO MOD "%s: Fatal Error\n",
- pci_name(dev->rdev.lldi.pdev));
- dev->rdev.flags |= T4_FATAL_ERROR;
- if (dev->registered) {
+ pci_name(ctx->lldi.pdev));
+ if (ctx->dev) {
struct ib_event event;
+ ctx->dev->rdev.flags |= T4_FATAL_ERROR;
memset(&event, 0, sizeof event);
event.event = IB_EVENT_DEVICE_FATAL;
- event.device = &dev->ibdev;
+ event.device = &ctx->dev->ibdev;
ib_dispatch_event(&event);
- c4iw_unregister_device(dev);
+ c4iw_remove(ctx);
}
break;
case CXGB4_STATE_DETACH:
printk(KERN_INFO MOD "%s: Detach\n",
- pci_name(dev->rdev.lldi.pdev));
- mutex_lock(&dev_mutex);
- c4iw_remove(dev);
- mutex_unlock(&dev_mutex);
+ pci_name(ctx->lldi.pdev));
+ if (ctx->dev)
+ c4iw_remove(ctx);
break;
}
return 0;
@@ -576,11 +587,13 @@ static int __init c4iw_init_module(void)
static void __exit c4iw_exit_module(void)
{
- struct c4iw_dev *dev, *tmp;
+ struct uld_ctx *ctx, *tmp;
mutex_lock(&dev_mutex);
- list_for_each_entry_safe(dev, tmp, &dev_list, entry) {
- c4iw_remove(dev);
+ list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) {
+ if (ctx->dev)
+ c4iw_remove(ctx);
+ kfree(ctx);
}
mutex_unlock(&dev_mutex);
cxgb4_unregister_uld(CXGB4_ULD_RDMA);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 17:41:39 +0300